Description: Details:Based on the classic Marantz MA-9S2 power amplifier circuit. ,Adopt the same main circuit as the original machine. Using the HDAM-SA module topology, the input is a very nice Diamond Buffer circuit, also called "diamond (diamond) expansion circuit", and the I/V mirror circuit is used between the voltage levels, and the matching characteristics before and after are excellent. The feedback form is current negative feedback, which has excellent load control ability. In addition, a midpoint servo circuit and a more complete speaker protection circuit are added. The intermediate voltage is very stable and is basically a few millivolts.Power supply range: main voltage dual DC 35~55V (dual DC 45V is recommended); speaker protection power supply single AC 12~17V (single AC 12V is recommended).PCB size: 167*83MMTips: We also have finished boards and complete kits for sale, if you need them, please contact us. Thanks! ! !Note：R1=22KPackage list:One pair × Amplifier board pcb Not included any parts ！ Power supply ：https://www.ebay.com/itm/165246539001 Assembled board ，just for reference：
Price: 12 USD
Location: 广州
End Time: 2023-12-04T12:20:50.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Amplifier Class: Universal
Compatible Brand: Universal
UPC: Does not apply
EAN: Does not apply
Type: Preamp Board
Compatible Model: Universal
Features: Universal
Color: Blue
MPN: Does not apply
Brand: SENGTERBELLE
