Sylph-D100 TPA3251 PFFB Stereo Amplifier Module (Ready to Run)

$99.00 USD Sold Out

Mid-power chip-based class-D amplifier with sound improvements through optimization and careful parts selection. TPA3251 chip was selected for best midrange clarity.

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.

Use of bulk capacitance in AVDD supply, and various tweaks to improve the sound quality. Choice of input coupling cap and output inductor (dominant second harmonic) was made to add warmth to the TPA3251 signature sound.

Use of voltage supervisor IC to avoid large turn on-off pops or clicks.

Input coupling caps layout can accomodate to 7.5mm x 7.5mm, 5mm pitch poly caps.

Can be configured as a mono PBTL on post LC filter (Stereo->Mono PBTL: requires soldering connection wires to the output terminals.).

PFFB can be enabled by top board jumpers (warning: power should be fully turned off).

Package Includes
1 pc Sylph-D100 stereo Ready to Run module.
2 pc female 2.54 mm 3 pin connector.

Supply Voltage: 24V DC min to 36V DC max
Unclipped Power (36V Supply): 45W-8Ω, 90W-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: ~6.5W at 36V DC
Footprint: 133mm 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: 400g

Recommended Power Supply
- 36V 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 32V DC for unregulated supplies

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:

Kindly check your spam or junk folder if you haven't received any response. Thank you

Prices are subject to change without prior notice.