4 x KT88 (Output power tubes) — Note: Some vintage variations may use 6550 or EL34 tubes depending on the factory revision. 2 x ECC83 / 12AX7 (Preamp/input stage) 3 x ECC82 / 12AU7 (Driver/driver-splitter stage) Cathode Bias (Auto-Biasing) Inputs: 5 Line-level inputs (CD, Tuner, Aux 1, Aux 2, Tape)
The DA30 has output transformers optimized for different loads. Standard wiring is usually set for 4–8 ohms. jadis da30 manual