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20W Class A tube input MOSFET SE output Borbely architecture PCB 1 piece!
20W Class A tube input MOSFET SE output Borbely architecture PCB 1 piece!
20W Class A tube input MOSFET SE output Borbely architecture PCB 1 piece!

20W Class A tube input MOSFET SE output Borbely architecture PCB 1 piece!

$ 7.91

Availability: 101 in stock
  • Refund will be given as: Money Back
  • Condition: New
  • All returns accepted: Returns Accepted
  • Brand: Unbranded/Generic
  • Type: Power Amplifier
  • Restocking Fee: No
  • Return shipping will be paid by: Seller
  • MPN: Does Not Apply
  • Item must be returned within: 30 Days

    Description

    This is the bare PCB of a pure class A MOSFET amplifier, output power 20Wrms at 8 ohms loading. The circuit use a tube ( E88CC or 6922 ) as the input stage. The tube worked as a long-tail pair loaded by a current mirror. The output is a MOSFET in SE class A mode which is loaded by a current source composed of another power MOSFET.
    This architecture was based on a hybrid headphone amplifier designed by Borbely. It was eventually adapted as a power amplifier.
    Working at +/-36V, the amplifier can give 20Wrms non-clipping output power in class A.
    This is a single channel amplifier PCB. Two PCBs are needed to form a stereo amplifier.
    PCB dimension : 210mm x 65mm.
    PCB thickness : 1.6mm, 2 oz ( 75um thickness copper) deposition which is FOUR times normal process of copper thickness.
    Gold plated surface.
    We provide adjustment guide/schematic and part list to customers by EMAIL.
    We do air shipping worldwide at US.00. We welcome combine shipping.
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