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Group Buy: Class-D GaN 150W BOSC Amplifier Modules

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orchardaudio

orchardaudio

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Joined 2017
orchardaudio.com
The modules use my proprietary dual feedback modulator. The modules are fully balanced from input to output using bridged GaN power stages.

Only high-quality components from TI, Analog Devices, Panasonic, Sagami, etc.

150W BOSC GaN Module Specifications:
  • Gain: 16.8dB or 6.92
  • Signal to Noise Ratio (SNR): 121dB (A-weighted)
  • Residual Noise: 32uV
  • THD* @ 10W: <0.0003% (-110dB) for 1kHz into 8Ω
  • THD @ 0.25W: <0.0030% for 20Hz - 20kHz into 8Ω
  • THD @ 10W: <0.0013% for 20Hz - 20kHz into 8Ω
  • THD @ 75W: <0.0050% for 20Hz - 20kHz into 8Ω
  • THD @ 150W: <0.015% for 20Hz - 20kHz into 8Ω
  • THD @ 10W: <0.0004% (-108dB) for 1kHz into 4Ω
  • THD @ 0.25W: <0.0030% for 20Hz - 20kHz into 4Ω
  • THD @ 10W: <0.0025% for 20Hz - 20kHz into 4Ω
  • THD @ 75W: <0.0092% for 20Hz - 20kHz into 4Ω
  • THD @ 150W: <0.015% for 20Hz - 20kHz into 4Ω
  • Frequency Response: DC - 60kHz+
  • Sensitivity: 5Vin for 150W
  • Input Impedance: 5kΩ fully balanced
  • Output Power: 150Wrms or 300Wpeak
  • Damping Factor: >550 @ 1kHz
  • Module Size: 3.64" (9.25cm) x 3.3" (8.38cm) x 1.0" (2.54cm)

Full test results using APX525 posted here (scroll down):
Orchard Audio - Audio Power Amplifier, Home Audio, Home Stereo System | Orchard Audio

Required Power Supply:
48V, 250W for 100W output into 8ohm
54-56V, 250W for 150W output 8ohm
Mating Power Plug: Molex / 39-01-2060

I have multiple customers using these:
Murata / PQC250-54

The modules are capable of 300Wrms (600Wpeak) into 4 ohms but will require heatsinking of the GaN power stages.

MSRP for 2 modules $700, discounts as follows:
  • 5 People purchase: 5% ($35) off MSRP
  • 10 People purchase: 10% ($70) off MSRP
  • 15 People Purchase: 20% ($140) off MSRP
  • 25+ People Purchase: 25% ($175) off MSRP
Shipping will be extra.

Product Page Link:
BOSC™ Amplifier Module

Links to reviews:

The first two images show customer builds.
 

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