Don and I have flying under the radar for the past year or so ... the Toronto show will debut what we’ve been up to. Fully balanced, all transformer coupled, all stages independently regulated (no RC filtering), and an all-direct-heated-triode signal path with zero local or global feedback.
Fixed bias, with independent servo autobias for each output tube, for Class A1, Class A2, Class AB1, and Class AB2 operation, depending on instantaneous current demand. Full Class A1 balanced through 20 watts (same as previous products) but with extended operating modes and no requirement for tube matching. DC offsets in the output transformer have been reduced to a fraction of a milliamp, extending LF response.
It’s a fascinating combination of 1930’s Western Electric philosophy with modern bandwidth, power supplies, and signal isolation. The new preamp and new power amp are designed to work together in an all-balanced configuration, but the preamp has RCA and XLR inputs to cater to both traditional and modern phono preamps and DACs.
Troy has been listening to our development preamp and power amp for past six months in his system, so he’s been part of the subjective tuning team.

