Signature 4 chassis Mono Amps includes 2 full size power supplies and 2 amp chassis. The YBA Signature Amplifier is a full mono design. Compact, but very heavy amplifier attractively finished in black anodized aluminum with black heatsinks running the length of its sides. Original retail $30K USD. There is a power switch on the front concealed by one of the handles. The rear has a balanced and unbalanced input and the output channel has two sets of speaker level outputs for easy bi-wiring.
The power supply uses C-core AC transformers mounted on sorbothane washers just behind the front panel to reduce vibrations. The output devices are mounted on mica and copper in order to reduce capacitive effects. Cooling surfaces are overdimensioned and printed circuit boards are double the usual thickness.
The amplifer is very conservatively rated at 100Wpc at 8 ohms and 200Wpc at 4 ohms.