Thomas Mayer's latest design is the all Silver D3a Differential phono preamplifier with all signal transformers, plate chokes, and LCR coils in silver. This phono preamplifier will be used together with the already finished 10Y differential line preamplifier and the 300B monoblocks.
To accommodate all the necessary components, the signal unit must be 6 cm longer than the usual standard size. The power supply is located in the usual 40cm long portrait chassis.