Author Topic: BOSC™ - HiFi Monoblock Class-D GaN Amp  (Read 371 times)

Offline orchardaudio

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BOSC™ - HiFi Monoblock Class-D GaN Amp
« on: June 29, 2019, 02:12:12 PM »
BOSC uses the latest in Gallium Nitride (GaN) technology to achieve high performance in a small form factor.

The low on resistance and low capacitance of the GaN FET enables high efficiency and lowers loop impedance for low Transient Intermodulation Distortion (T-IMD). The fast switching capability and zero reverse recovery charge enable higher output linearity and low cross over distortion for lower Total Harmonic Distortion (THD).

Preliminary Specifications:
  • Gain: 16.8dB or 6.92
  • Signal to Noise Ratio (SNR): ~120dB
  • Total Harmonic Distortion (THD): <0.0006% (-105dB) @ 5W
  • Frequency Response: DC - 40kHz
  • Sensitivity: 2.5Vin for 37.5W into 8Ω
  • Input Impedance: 5kΩ fully balanced
  • Output Power: 100W into 8Ω w/ 48V Power Supply
  • Output Power: 150W into 8Ω w/ 56V Power Supply
  • Size:  5.5" (14cm) x 4.8" (12.2cm) x 1.9" (4.8cm)

Sign up to get updates and receive special early bird pricing on the amazing BOSC™ monoblock amp:
https://www.indiegogo.com/projects/bosc-hifi-monoblock-class-d-amp/coming_soon

Offline Folsom

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #1 on: June 29, 2019, 02:59:24 PM »
Well, you'll need a preamp with a hell of a lot of gain for that! Low for balanced is 20db, 26-32db is typical SE.

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #2 on: June 29, 2019, 03:34:08 PM »
Well, you'll need a preamp with a hell of a lot of gain for that! Low for balanced is 20db, 26-32db is typical SE.

If you have a PecanPi product no pre-amp needed.

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #3 on: June 30, 2019, 04:23:50 AM »
Preliminary THD vs Power Plot:

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #4 on: July 09, 2019, 10:30:44 AM »
If you are really interested in this product and would like to be one of the first people to get it at a reduced price, reserve now for $1. Only 55 spots available:
https://orchardaudio.com/shop?olsPage=products%2Fbsc-mplfr

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #5 on: July 12, 2019, 02:10:37 PM »
Full pricing information and updated specs available on my website here:
https://orchardaudio.com/bosc

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #6 on: July 14, 2019, 06:07:00 PM »
I am looking for people who would be interested in trying these amps and posting their findings.

Offline HAL

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #7 on: July 14, 2019, 07:21:45 PM »
I am on the list and will be trying them with The Monoliths fully active speaker when I get them.

Comparison is to a pair of Parasound A23 amps on the planar drivers.

Offline mdconnelly

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #8 on: July 15, 2019, 07:24:52 AM »
I am looking for people who would be interested in trying these amps and posting their findings.

Leo, I'd definitely be interested, but not until I've got my PecanPi and I can borrow a pair of BOSC to test.   So timing wise, it may not be ideal for you.

Offline orchardaudio

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Re: BOSC™ - HiFi Monoblock Class-D GaN Amp
« Reply #9 on: July 15, 2019, 10:22:22 AM »
I am looking for people who would be interested in trying these amps and posting their findings.

Leo, I'd definitely be interested, but not until I've got my PecanPi and I can borrow a pair of BOSC to test.   So timing wise, it may not be ideal for you.

If everything goes according to plan I will be shipping your PecanPis before the end of the month. And then follow up with the amps sometime in the middle of August.