Voltage amplification is handled by NOS Mullard 6JC6 tubes and a Slovak JJ 6SN7. The driver stage of our test sample ran Electro-Harmonix 6L6EH tubes. Tube rolling is fully sanctioned - EL34, 6CA7, 5881, 6550, KT88 and KT90 all fit, so the amplifier's sonic signature can be tailored to taste. The output stage runs Cayin's own branded 805A directly heated triodes. EI-core output transformers realize the tubes' potential, while a toroidal transformer handles the power supply (maximum consumption reaches 410 W).