Sylph-D400M TPA3255 PBTL Mono Single Supply RTR Amplifier Module

$96.00 USD

TPA3255 based, mono class-D amplifier with 2 ohms load capability.

The board has a passive PFFB configuration similar to SLAA788A. PFFB can be enabled/disabled by the user through onboard jumpers.

The analog input can accept full balanced or single ended signals which can be configured by onboard jumpers. The output is 1 channel, mono PBTL configuration.

A split supply is used in the opamp buffer in order to remove the frontend electrolytic input coupling caps in the buffer stage. The negative rail for opamp supply is being generated on-board with additional TPS7A ultralow-noise post regulator. Each opamp has a separate bulk caps on its positive and negative rails.

Includes TVS diode for power supply surge protection, and will normally fail short when an accidental reverse polarity is applied.

Use of oversized capacitors and resistors for the zobel network to ensure reliable operation in PFFB mode.

Use of bulk capacitance in AVDD supply for improvement in sound quality.

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

Package Includes
1 pc Sylph-D400M mono Ready to Run module.
4 pc female faston tab connector.
1 pc female 2.54 mm 3 pin connector.

Supply Voltage: 30V DC min to 51V DC max
Power (1% THD+N, 50V): 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
Turn on-off pop suppression: Yes
Gross packed weight: 500g

Recommended Power Supply
- Single supply 48V SMPS 350W or higher.
- DO NOT use power supply with split rails.
- LRS-350-48 or SE-450-48

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Prices are subject to change without prior notice.