• These commercial threads are for private transactions. diyAudio.com provides these forums for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members, use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

Quality Line preamplifier / Power supply boards

Assembled and tested line preamplifier board with power supply board. Preamplifier is suppose to be some "MBL" copy, IMHO it's a standard two op-amps per channel circuit, one with gain, one as buffer. Nicely designed , good grounding, a lot of filtering...works and sounds great.
Stuffed with good material, genuine Alps poti, op-amps installed are BurrBrown OPA-134, resistors that control gain are on gold plated sockets, easy adjustable for other gains or op-amps.
Power supply is low-noise, op-amp servo LM317/337...only needs suitable transformer.
Price 50€ for both boards or PM me with some offer.
Regards, Davorin


  • DSC_0077.JPG
    203.8 KB · Views: 170
  • DSC_0067.JPG
    191.1 KB · Views: 175
  • DSC_0064.JPG
    163.6 KB · Views: 166