We have sold three units of the Performer, and here are some photos and specifications:
This was the first iteration of 50 watt per channel fixed bias KT88 push-pull amplifier.
In a rather unique configuration we designed an integrated amplifier with a tube phono stage in the front. 2 x 6SL7's does the RIAA conversion and the 6SN7 does the drive task.
The next iteration used 12BH7 tubes as drivers, as a matter of fact, two 12BH7's per side (4 in total).
The Ukraine war made KT88's momentarily scarce, and we did a design with 807 output tubes. It was a opportunity to do a design with 600VDC on the anodes and 300V on the screen grids. We also wound the output transformers with 12% cathode feedback taps.
The design was shifted to a power amp design. In stead of three transformer covers, we went with a single large box concept. VU's included on customer's request. The results were promising, and we're waiting for critical listening reports.
Specifications to follow...
This was the first iteration of 50 watt per channel fixed bias KT88 push-pull amplifier.
In a rather unique configuration we designed an integrated amplifier with a tube phono stage in the front. 2 x 6SL7's does the RIAA conversion and the 6SN7 does the drive task.
The next iteration used 12BH7 tubes as drivers, as a matter of fact, two 12BH7's per side (4 in total).
The Ukraine war made KT88's momentarily scarce, and we did a design with 807 output tubes. It was a opportunity to do a design with 600VDC on the anodes and 300V on the screen grids. We also wound the output transformers with 12% cathode feedback taps.
The design was shifted to a power amp design. In stead of three transformer covers, we went with a single large box concept. VU's included on customer's request. The results were promising, and we're waiting for critical listening reports.
Specifications to follow...
