NAKSA 100 is nearing completion, and will soon be available.
Integrated power supplies on each board, which is 276mm long, almost the same dimensions as the NAKSA 70 pcb.
Two boards and two heatsinks for two channels; just double the hardware of the NAKSA 70. Pcb is gold immersion, 2oz copper, double sided, 2mm thick FR4, premium quality. Design took an eternity, but is very tight and extremely compact.
Sound quality: Very similar to the NAKSA 70, the same sonic imprint, slightly more refined if anything.
Transformer requirement: One single 425VA with two 35Vac secondaries. 500VA may also be used.
Will drive loads down to 2.5R, even less if rails are lowered to 42 volts each. Servo circuit of uniquely elegant design used to tightly control offset.
Sold fully built and tested, with two year conditional warranty, including heatsinks, RCAs, onnectors, mounting studs, chassis earth loom, signal, speaker and power loom, heatshrink.
Unconditional stability into any load, electrostatic speakers a specialty. This amp is extraordinarily robust; even output shorts merely blow fuses and emitter resistors, no danger to output devices!!
Estimated cost at this point: $AUD1420.
This design is exemplary, up there with the Soraya and Maya retail amps, but slightly different. It is designed for use with simply a volume adjustable source, or a passive attentuator, and delivers sound quality very like a tube amp with real power. It has palpable warmth and engagement, and will tap feet and bring smiles to the listener, my primary focus. It is cheaper than the Lifeforce, more compact, and does not require two transformers and a separate power supply pcb. The Maya is an amp of almost supernatural presence and purity; the Soraya an amp of uncanny refinement. These three amps fill different sonic tastes, no question.
I will post pictures of the first production boards, they will look wonderful, with two large filter caps at each end of the pcb! Very pleased with how all this has turned out, it's a corker!
Cheers,
Hugh
