ARTsy phono – It's conrad-johnson's latest reference phono stage limited to 250 units worldwide [$28K, add $2K for step-up transformer]. "The circuit for each channel consists of two triode gain stages utilizing paralleled sections of 12AX7A twin triodes coupled to the output through a buffer of paralleled sections of a 12AU7/6189 twin triode for low output Ω. Each channel is provided with two independent discrete regulated DC power supplies, one for the input gain stage, one for the second gain stage and buffer stage." With 53dB of stock gain optionally expandable to 63dB via step-up transformer, there's also variable capacitive and resistive loading on the second input.
