Amazing sound and build quality. I spoke with Sophia Electric directly and very few of these were produced. The equivalent monoblocks now cost $18,000. No boxes so local pickup only.
In speaking directly with Sophia Electric, they advise the units were manufactured in 2005. The driver tubes are 206. The main tubes are 845. The amps are Single Ended (not push-pull). I believe the watt output is about 30 per channel. Is it quite powerful for the design. You rarely get this Single Ended design with a high watt output, thus the normal high cost for these type of amps.