# sylphaudio.com ## Pages - [Home](https://sylphaudio.com/home/): Home – sylphaudio.com Experience Premium Sound High-fidelity audio equipment and modules designed for the ultimate listening experience. Built for audiophiles and DIY enthusiasts. View Products We help you build the sound system of your dreams At Sylph Audio, we are dedicated to providing audio lovers with the highest quality hardware. Whether you are upgrading a home theater or building a completely custom stereo rig from scratch, our modules deliver. Every piece of hardware is rigorously tested to ensure unparalleled dynamic range, low noise, and long-term reliability. Ready to upgrade your sound? Get in touch with us to discuss technical specs or […] - [My account](https://sylphaudio.com/my-account/) - [Checkout](https://sylphaudio.com/checkout/) - [Cart](https://sylphaudio.com/cart/) - [Products](https://sylphaudio.com/) ## Products - [TIC-260BTL TPA3255 PFFB Stereo [Archived]](https://sylphaudio.com/product/ticore260btl-tpa3255-pffb-post-filter-feedback-ready-to-run-amplifier-module/): TPA3255 passive post filter feedback implementation with modifications for sound improvement. Uses Infineon's OptiReg TLS205B0 24 µVRMS, 500mA linear post regulator for 12V supply, which produces clean and quiet power for the input opamps and low noise floor for a TPA3251 based module. Designed for use with Coilcraft VER2923-103KL flat wire, low loss inductors to get the most out of the TPA3255's THD+N performance. The output inductors run cool and dissipate very little heat on idle. The analog input can accept full balanced or single ended signals which can be configured by a solder jumper under the PCB. The output is 2 channel, stereo BTL configuration. A separate voltage supervisor IC is used to mute the amp in power on, and power off. Use of oversized capacitors and resistors for the PFFB zobel network to ensure reliable operation. Package Includes 1 pc stereo BTL PFFB partial module. 6 pc female faston tab connector. 2 pc female 2.54 mm 3 pin connector. 2 pc compatible heatsink screws and washers. Specifications Recommended Voltage: 43V to 48V DC Output Power (<1% THD+N): 110W-8Ω, 220W-4Ω Voltage gain: 10.9x (~20.7dB) Input sensitivity: 2.5V RMS Input impedance: 10K Ω Input configuration: SE / Balanced input jumper Load impedance: 4Ω or 8Ω Idle dissipation: ~7W at 48V DC Footprint: 148mm x 100mm x 55mm (L * W * H) Number of PCB Layers: 2 layer copper Overcurrent /short protection: Yes Over voltage protection: Yes Overheat protection: Yes Turn on-off pop suppression: Yes Gross packed weight: 650g Other Specs Transient voltage protection: 62V TVS + 56V SCR Zobel network values: 1Ω + 220nF Compatible Heatsink: ATS-TI1OP-519-C1-R3 Compatible Inductors: VER2923, AGP2923, 7G23A Recommended Power Supply (NOT INCLUDED) - Single supply SMPS 48V DC, 200W or higher. - Should be able to handle large load capacitance and should normally operate on light load (~5W). -- Options -- With 2 pcs OPA1656 or LME49860 on SOIC-8 to DIP-8 adapter ENIG PCB ----------------------------------------- Notes on Input Sensitivity 2.5Vrms is needed to drive the amp into near clipping condition (1% THD). A 1.5Vrms input can fill a small room with loud music. -- Shipping -- Shipping consolidation happens once a week. Kindly wait for up to 5 business days for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping times of 3 to 6 weeks (Max 8 weeks depending on Covid situation). Contact us for actual shipping amount of combined items. support@jlelectronicsph.com Kindly check your spam or junk folder if you haven't received any response. - [SylphAudio D400M PFFB TPA3255 PBTL Mono [Archived]](https://sylphaudio.com/product/sylphaudio-d400m-pffb-tpa3255-pbtl-mono/): Designed for audio quality, superb soundstage and silky smooth highs that rivals high end audio amplifiers. Solder jumper for slave setting, OSC IOM/IOP pads are under the PCB for multi-device configuration. (SLAA787) Header jumpers for BAL/SE input configuration, and PFFB enabled/disabled configurations. **** For partially assembled option, these items are not yet installed: 8pcs 1800uF 63V 18mm bulk caps 2pcs heatsinks: ATS-TI1OP-519-C1-R3 4pcs o/p inductors: VER/AGP2923-103KL **** For RTR option without heatsink, the following ATS heatsinks are compatible: Available on Mouser or Digikey ATS-TI1OP-519-C1-R3 ATS-TI1OP-519-C1-R0 **** Package Includes 2 pcs Sylph-D400M RTR module Options: with heatsink and without heatsink Specifications: TPA3255 Supply Voltage: 26V DC min to 51V DC max Unclipped Power @50V Supply: 100W-8Ω, 200W-4Ω, 400W-2Ω Input sensitivity SE (PFFB disabled): 1V RMS Input sensitivity SE (PFFB enabled): 2V RMS Input sensitivity Balanced (PFFB disabled): 2V RMS Input sensitivity Balanced (PFFB enabled): 4V RMS Input impedance: 10K Ω Input configuration: SE / Balanced (header jumper) Load impedance: 2Ω, 4Ω, or 8Ω Footprint: 110mm x 100mm x 45mm (L * W * H) Overcurrent /short protection: Yes Over voltage protection: No Overheat protection: Yes Recommended Power Supply (NOT INCLUDED) - Single supply 51V SMPS (350W or higher). - DO NOT use power supply with split rails. - Use 43V-45V for unregulated supplies Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Thank you Prices are subject to change without prior notice. **** - [SylphAudio D200 MKII TPA3255 Stereo Amplifier Module [Archived]](https://sylphaudio.com/product/sylph-d200-mark-ii-tpa325x-stereo-amplifier-module-ready-to-run/): Mid-power chip-based class-D amplifier with sound improvements through optimization and careful parts selection. Analog inputs can accept differential or single ended signals configurable via solder jumpers. The output is 2 channel, stereo BTL configuration. Balanced input is enabled by default unless otherwise requested. A split supply is used in the opamp buffer section in order to delete the redundant input coupling caps in the frontend audio path which results to reducing the smearing effect on sound and increased clarity. The opamp rail supplies are being generated on-board with positive and negative post regulators. It uses the same ATS heatsink that can be found on official Texas Instruments TPA3255 EVM modules. Solder jumper for slave setting, OSC IOM/IOP pads are under the PCB for multi-device configuration. (SLAA787) The board has a standard PFFB configuration from SLAA788A. PFFB is disabled by default and can be enabled/disabled through solder jumpers (power supply should be fully turned off). Capacitor for PVDD is either United Chemi-con KZN / KYB Series or Panasonic FC series whichever is available. Package Includes 1 pc Sylph-D200 Mark II stereo Ready to Run module. 2 pc female 2.54 mm 3 pin connector. Specifications Supply Voltage: 24V DC min to 51V DC max Unclipped Power (51V Supply): 85W-8Ω, 170W-4Ω per ch Input sensitivity - SE (PFFB disabled): 1V RMS Input sensitivity - SE (PFFB enabled): 2V RMS Input sensitivity - Balanced (PFFB disabled): 2V RMS Input sensitivity - Balanced (PFFB enabled): 4V RMS Input impedance: 10K Ω Input configuration: SE / Balanced (solder jumper) Load impedance: 4Ω or 8Ω Idle dissipation: ~7.5W at 50V DC Footprint: 150mm x 100mm x 45mm (L * W * H) Number of PCB Layers: 2 layer copper Overcurrent /short protection: Yes Over voltage protection: Yes Overheat protection: Yes Turn on-off pop suppression: Yes Gross packed weight: 500g ATS Heatsink Part No. ATS-TI1OP-519-C1-R3 ATS-TI1OP-519-C1-R0 Recommended Power Supply (NOT INCLUDED) - 48V DC Single supply SMPS 350W or higher. - DO NOT use power supply with split rails. - Mean Well LRS-350-48, or SE-450-48 - Use 44V DC for unregulated linear supplies Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Thank you Prices are subject to change without prior notice. **** - [Sylph-D200 TPA3255 Stereo Amplifier Module [Archived]](https://sylphaudio.com/product/sylph-d200-tpa3255-pffb-stereo-ready-to-run-amplifier-module/): Mid-power chip-based class-D amplifier with sound improvements through optimization and careful parts selection. The analog input can accept full balanced or single ended signals which can be configured by a solder jumper under the PCB. The output is 2 channel, stereo BTL configuration. Single ended input is enabled by default unless otherwise requested. A split supply is used in the opamp buffer section in order to delete the redundant input coupling caps in the frontend audio path. The opamp rail supplies are being generated on-board with positive and negative post regulators. Includes transient voltage protection SCR which will fail short in overvoltage scenarios*. TVS diode for power supply surge protection, and will normally fail short when an accidental reverse polarity is applied. (*requires power supply with OCP) Use of oversized capacitors and resistors for the zobel network to ensure reliable operation in PFFB mode. Use of bulk capacitance in AVDD supply, and various tweaks to improve the sound quality. Use of voltage supervisor IC to avoid large turn on-off pops or clicks. The board has a passive PFFB configuration (similar to SLAA788A). PFFB is disabled by default and can be enabled/disabled through a solder jumpers. Input coupling caps layout can accomodate to 7.5mm x 7.5mm, 5mm pitch poly caps. Capacitor for PVDD is either United Chemi-con KZN / KYB Series or Panasonic FC series whichever is available. Package Includes 1 pc Sylph-D200 stereo Ready to Run module. 2 pc female 2.54 mm 3 pin connector. Specifications Supply Voltage: 30V DC min to 51V DC max Power (48V Supply): 80W-8Ω, 160W-4Ω Input sensitivity - SE (PFFB disabled): 1V RMS Input sensitivity - SE (PFFB enabled): 2V RMS Input sensitivity - Balanced (PFFB disabled): 2V RMS Input sensitivity - Balanced (PFFB enabled): 4V RMS Input impedance: 10K Ω Input configuration: SE / Balanced (solder jumper) Load impedance: 4Ω or 8Ω Idle dissipation: ~7W at 48V DC Footprint: 150mm x 100mm x 45mm (L * W * H) Number of PCB Layers: 2 layer copper Overcurrent /short protection: Yes Over voltage protection: Yes Overheat protection: Yes Turn on-off pop suppression: Yes Gross packed weight: 500g Recommended Power Supply (NOT INCLUDED) - 48V DC Single supply SMPS 350W or higher. - DO NOT use power supply with split rails. - Mean Well LRS-350-48 - Use 44V DC for unregulated linear supplies - Up to 51V DC SMPS can be used at the expense of higher idle heatsink dissipation Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Feel free to contact us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Thank you Prices are subject to change without prior notice. **** - [[SE500] Mono Class-D Subwoofer Amp Module](https://sylphaudio.com/product/se500-mono-class-d-subwoofer-amp-module/): [SE500] Mono Class-D Subwoofer Amp Module 2024 Update: Tectonic-D500 will be renamed to "SE500" Class-D amplifier module specifically designed for subwoofer and rugged - full range PA applications. Upgrade your amplifier by retrofitting our SE500 module into the power amp section of your busted plate amp or subwoofer amp. Our module is engineered to provide high current output without the aggressive limiters or excessive protections found in other class-D implementations. The SE500 features a flat wire, high current, low loss ferrite core output filter inductor, guaranteeing optimal performance. Additionally, we've integrated housekeeping supplies, simplifying installation by requiring only the main split power supply. Each SE500 undergoes rigorous testing and quality checks before shipping, ensuring you a fault-free product that you can trust. **** Package Includes 1 pc assembled and tested mono module without heatsink. 1pc JST Input connector 5pc Female faston tab Features Gain can be further increased by a applying a solder jumper under the PCB. Clock and mute headers for advanced / multi-channel projects. Specifications Supply Voltage: ± 65V to ± 75V DC Output Power (± 70V DC): 500W-4Ω 1kHz THD+N: less than 0.05% at 420W 4Ω Voltage gain: 25x low gain, 34x high gain mode Input sensitivity: 1.8V RMS (low gain), 1.3V (high gain) Input impedance: 4.4KΩ Load impedance: 4Ω Idle dissipation: ~5W at ± 70V DC PCB area: 110mm*60mm*40mm (L * W * H) Overcurrent /short protection: Yes Speaker Protection*: No Over voltage protection: No *Speaker protection is mandatory for any amp (not included). Recommended Power Supply (NOT INCLUDED) - LLC type SMPS is recommended - Dual output ± 65V to ±75V 600W - Add a minimum of 2200uF per rail to avoid bus pumping. Rails should not exceed ±80V Applications 4Ω 500W subwoofers Retrofit and repair of subwoofers Karaoke / Videoke / Jukebox **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. - [[D400M] TPA3255 Mono PBTL RTR Kit](https://sylphaudio.com/product/sylphaudio-d400m-tpa3255-pffb-mono-pbtl-amp-kit/): [D400M] TPA3255 Mono PBTL RTR Kit A high-power mono amplifier module built for flexible system integration and demanding low-impedance operation. This module is based on the TPA3255 in a mono PBTL, non-PFFB configuration and is intended for applications where high output power, configurability, and robust protection are required. The amplifier delivers 250 W into 4 Ω at 1% THD+N, with stable operation across a wide range of speaker loads. Signal Options The input stage supports both full differential and single-ended signal configurations, allowing easy integration into a variety of audio systems. Replaceable Op-Amp Socket A socketed input-stage op-amp allows users to select or replace the op-amp IC, providing flexibility for system tuning or maintenance without board modification. Split Supply Design The op-amp buffer section uses a split supply, eliminating redundant input coupling capacitors at the frontend. This reduces the number of components in the signal path and helps preserve signal integrity. Low-Impedance Capability The module is capable of driving 2 Ω loads, delivering up to 600 W (20 Hz–20 kHz, clipping conditions) without triggering protection, making it suitable for subwoofer and high-current applications. Protection and Reliability Features -TVS diode for power supply surge protection -Reverse polarity protection* to prevent damage from incorrect supply connection -Voltage supervisor IC for silent turn-on and turn-off behavior, minimizing audible pops or clicks -An official ATS heatsink designed for the TPA3255 is used to ensure effective thermal dissipation and stable operation, even in sustained high-current or 2 Ω subwoofer setups. Multi-Device Configuration Support -Solder jumpers allow straightforward configuration for master/slave operation in multi-module systems -Accessible OSC IOM / IOP pads located on the underside of the PCB enable channel expansion and system scaling (refer to SLAA787 for configuration details) *Requires power supply with overcurrent protection. Elna Silmic II input coupling caps. **** Package Includes Sylph-D400M P05 mono, options below Connectors for RTR options Specifications Supply Voltage: 26V DC min to 52V DC max Unclipped Power (<1% THD+N, 52V): 115W-8Ω, 220W-4Ω, 400W-2Ω Input sensitivity - SE: 2.1V RMS Input sensitivity - BAL: 4.2V RMS Voltage gain (BAL): 16.4dB (6.6V/V) Voltage gain (SE): 22.4dB (13.2V/V) THD+N (5W 4Ω, 1kHz): -98dB Input configuration: SE / Balanced (header jumper) Load impedance: 2Ω, 4Ω, or 8Ω Footprint: 110mm x 100mm x 45mm (L * W * H) Overcurrent /short protection: Yes Over voltage protection: No Overheat protection: Yes Turn on-off pop suppression: Yes Recommended Power Supply (NOT INCLUDED) - Single supply 51V SMPS, 300W or higher per module. - DO NOT use power supply with split rails. - LOF550-20B48-C or SE-450-48 adjusted to 51V - Use 43V for unregulated "linear" supplies - Use 51V for 2Ω loads, up to 52V for 4Ω loads **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. - [[D100] Stereo Class-D RTR Kit](https://sylphaudio.com/product/d100-stereo-class-d-rtr-kit/): [D100] Stereo Class-D RTR Kit Latest Version is P03 Changes from version P02 includes: PFFB or Non-PFFB operation Input coupling caps is Elna Silmic II (Same as P01) 29dB Non-PFFB gain on SE input (Same as P01) **** Package Includes 1 pc Sylph-D100 P03 stereo module. 2 pc female 2.54 mm 3 pin connector. Specifications Supply Voltage: 24V DC min to 38V DC max Unclipped Power (38V Supply): 50W-8Ω, 100W-4Ω Power at 1% THD+N: 70W 8Ω, 125W 4Ω Voltage Gain: BAL 23dB (14V/V), SE 29dB (28V/V) Input configuration: SE / Balanced (solder jumper) Load impedance: 4Ω or 8Ω Idle dissipation: ~6.5W at 36V DC Footprint: 133mm x 100mm x 45mm (L * W * H) Gross packed weight: 400g Recommended Power Supply (NOT INCLUDED) - 36V to 38V DC Single supply SMPS 200W or higher. - DO NOT use power supply with split rails. - Mean Well LRS-200-36 or LRS-150-36 - Use 34V DC for unregulated linear supplies Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. **** - [[SE800] Mono PFFB Class-D Amplifier](https://sylphaudio.com/product/se800-pffb-high-power-class-d-amplifier/): [SE800] Studio Quality PFFB Class-D Amplifier Studio-quality clarity with smooth, warm sound even at high power. No hiss during quiet passages. High power Class D amplifier with PFFB by SylphAudio Power output: 300W @ 8Ω; 600W @ 4Ω Integrated housekeeping circuitry for wide supply voltage range and ultra-low idle power consumption PFFB (Post-Filter Feedback) reduces load dependency and improves noise and distortion, suited for high power full-range applications Optional clock and mute headers, suitable for advanced multi-channel use Differential / Single Ended inputs (tie IN– to GND for SE), 2 modules can be bridged together. Robust protection circuits for high reliability Elna Silmic II input coupling capacitor for smooth and clear sound **** Specifications Supply Voltage: dual ±25V min to ±85V max Load Impedance: 4Ω-8Ω Unclipped Power (<1% THD+N, ± 75V): 300W-8Ω, 600W-4Ω Input configuration: Differential / Single Ended Output configuration: Single Ended Input sensitivity: 3.4V RMS (for 600W-4Ω output) Voltage gain: ~23dB SINAD 5W 4Ω (± 75V DC rail): 96dB PCB area: 140mm x 70mm Overvoltage Protect: ±89V to ±91V DC Undervoltage Protect: none, UVLO @ ±12V DC Speaker Protect: none, requires a separate protection module. Recommended Power Supply ±75V DC, 1000W switching, dual voltage output Add a minimum of 2200uF per rail to avoid bus pumping. Rails should not exceed ±85V **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. - [[FB360] Mono Class-D Amplifier RTR Kit](https://sylphaudio.com/product/sylphaudio-fb360-mono-class-d-amplifier-kit-rtr/): [FB360] High Performance Mono Class-D Amplifier RTR Kit A high-power amplifier module designed for demanding loudspeaker systems. This module is intended for use with floor-standing speakers and large multi-driver systems, where stable power delivery and low distortion are critical. The design prioritizes measured performance and thermal stability, ensuring consistent operation under sustained load. The amplifier delivers 200 W into 4 Ω and uses a fully differential input and output configuration for improved noise rejection and signal integrity. A split power supply is employed in the preamp section, removing the need for redundant input coupling capacitors in the signal path. Only two Elna Silmic II capacitors are used, preserving signal purity. An upgraded post-filter feedback (PFFB) implementation achieves class-leading SINAD and IMD performance for a TPA3255 operating in mono PBTL configuration, resulting in clean and controlled output across the audible range. A large PCB area, substantial heatsinking, and oversized flat-wire output inductors are used to provide effective thermal management and reliable long-term operation. **** Sept. 2025 update: optimized capacitor selection for power supplies (opamps/AVDD analog section). Improved sound quality: deeper soundstage, finer highs. Tuned for a warmer sound. **** Package Includes 1pc SylphAudio FB360 mono 1pc JST Input connector 4pc Female Faston Tab Specifications Supply Voltage: 26V DC min to 52V DC max Unclipped Power (<1% THD+N, 52V): 115W-8Ω, 210W-4Ω Input sensitivity: 5V RMS Voltage gain: 15dB (5.6V/V) Input configuration: Fully Differential Load impedance: 4Ω, or 8Ω Footprint: 110mm x 100mm x 45mm (L * W * H) Overcurrent /short protection: Yes Over voltage protection: No Overheat protection: Yes Turn on-off pop suppression: Yes Recommended Power Supply (NOT INCLUDED) - Single supply 52V SMPS, 300W or higher per module. - DO NOT use power supply with split rails. - MEAN WELL RPS-500-48-C or SE-450-48 adjusted to 51V to 52V - Use 48V for unregulated "linear" supplies **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. - [[Stereo Preamp Buffer Module ] OPA1612 Single Supply Input](https://sylphaudio.com/product/stereo-preamp-buffer-module-opa1612-single-supply-input/): [Stereo Preamp Buffer Module] OPA1612 Single Supply Input Ultra low distortion and ultra low noise buffer or preamp. Can be used as a buffer for instrumentation ADC. The best preamp partner for FB100 or FB360. 20Hz-20kHz Flat Frequency Response across different gain settings. SE / BAL input switch by relays, no complicated wirings / jumpers. Only requires 26V to 75V single supply, no complicated power supply requirement. No capacitors in the signal path! Carefully selected power supply configuration to ensure natural, dynamic, and smooth sounding audio. All OPA1612 opamps. +/- 17.4V DC rails generated onboard. Panasonic FC and Elna Silmic II capacitors for opamp rails. Up to 21Vrms balanced output. (28.66 dBu max level) Low profile and space saving vertical chassis mounting. **** Modes: SE INPUT or BAL INPUT = Simultaneous SE and BAL OUTPUT SE output is always -6dB lower than BAL output, both are working simultaneously. BAL/SE header: open = BAL input, short = SE input **** Terminals / Connections SE I/O = (GND)(IN+) and (GND)(OUT+) BAL I/O = (GND)(IN+)(IN-) and (GND)(OUT+)(OUT-) **** Default Gain is 6dB. Gain can be adjusted by changing resistors on the back PCB or by specifying in your order. Gain | RU | RG 0dB | 51Ω | Open 6dB | Open |Open 10dB | Open | 820Ω 14dB | Open | 316Ω 16dB | Open | 220Ω 20dB | Open | 120Ω **** Package Includes 1pc SylphAudio Preamp 5pc JST 3pin connectors 2pc JST 2pin connectors 4pc mounting screws Specifications Input Impedance: 100K Ω Input Supply Voltage: 26V DC min to 75V DC max, 20W or higher Footprint: 120mm x 50mm x 15mm (L * W * H) **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice.   - [[FB100] Stereo Class-D Amplifier RTR Kit](https://sylphaudio.com/product/sylphaudio-fb100-stereo-class-d-amplifier/): [FB100] High Performance Stereo Class-D Amplifier RTR Kit Get the best sounding stereo amplifier for home audio with the SylphAudio FB100. The FB100 is designed with a focus on measured performance and predictable real-world behavior. By implementing advanced post-filter feedback (PFFB) without compromising the TPA3251’s output capability, the design achieves very low distortion and noise, with IMD and high-frequency performance that place it among the best-performing amplifiers in its class. The amplifier uses an ATS-TI1OP-519-C1-R3 heatsink (originally designed for the TPA3255), paired with a large PCB area to ensure adequate heat dissipation and thermally stable operation. An additional heat spreader is applied to the preamp section to further improve long-term reliability. The preamp section employs a split power supply, eliminating the need for an extra set of input coupling capacitors at the preamp frontend. This allows for only a single series input coupling capacitor in the signal path per channel, reducing potential coloration or haziness that may be introduced by multiple coupling stages. The module consists of four single-ended amplifiers, configured as 2-channel differential inputs and 2-channel BTL outputs. Dedicated post regulators are used for each preamp rail, along with a separate post regulator for the TPA3251 supply. Regulation for the preamp section is maintained even when the main supply voltage is reduced to 24 V DC, ensuring consistent operating conditions across a wide supply range. Oversized film capacitors are used in the Class-D output filter, together with flat-wire output inductors selected for low loss and stable performance, contributing to clean and controlled output under real speaker loads. Elna Silmic II input caps **** Sept. 2025 update: optimized capacitor selection for power supplies (opamps/AVDD analog section). Improved sound quality: deeper soundstage, finer highs. Tuned for a warmer sound. **** Package Includes 1 pc FB100 module (stereo BTL). 2 pc female 2.54 mm 3 pin connector. Specifications Supply Voltage: 24V DC min to 38V DC max Unclipped Power (38V Supply): 55W-8Ω, 100W-4Ω Input sensitivity: 4V RMS Voltage Gain: 14dB (5V/V) Input configuration: Fully Differential Load impedance: 4Ω or 8Ω Idle dissipation: ~5W at 38V DC Footprint: 137mm x 100mm x 45mm (L * W * H) Gross packed weight: 450g Recommended Power Supply (NOT INCLUDED) - 36V to 38V DC Single supply SMPS 200W or higher. - DO NOT use power supply with split rails. - Mean Well RPS-500-36-C or LRS-200-36 - Use 35V DC for unregulated "linear" supplies **** Shipping Shipments are consolidated once a week. Kindly wait for the tracking info to become available. Courier is a European Postal affiliated company with normal shipping ETA of 5 to 8 weeks. Contact us for combined shipping options and actual rates. Feel free to email us at: contact@sylphaudio.com Kindly check your spam or junk folder if you haven't received any response. Prices are subject to change without prior notice. [comment]: # (Generated by Hostinger Tools Plugin)