For a long time friend, who already has two of my power amps, one SS and one tube, I was requested to build this Class A power amp. Holton Precision of Tasmania had developed some new Class A 50W modules. That’s 50W pure Class A before sliding across to B. Amp should produce 90W in Class B.
The PS consisted of a 300W tranni and 132,000uf of Mundorf Mlytic audio grade caps. Dual 35A rectifier bridges round out the PS. The caps were heavily snubbed with high voltage polies. With a result the amp has near zero AC noise. But better than that, the amp produces beguiling music like I’d not heard before. Its ability to dig out inner detail and bring it to the front was uncanny. The new owner liked it also.
The amp runs extremely hot and to help control the heat two silent running fans were installed. The fans sat on rubber grommets for isolation and were run on low voltages. With a result they could not be heard. Though this build produced many challenges, over months of construction, it was worth it.
