We received a question about damping factor. Both the DAC4800A and Cherry were tested for this at 1KHz, which is higher than normal for a damping factor test. Into 8 ohms, it measures around 200 (Rload/Rout). All the way down to 20Hz, the measurement was about the same.
There has been some controversy regarding the real meaning of damping factor, however. Tube amps are known for their sweet sound but usually have a low damping factor due to high output impedance. We believe the natural open loop performance of the amp comes into play as damping factor lowers. In most cases this occurs as frequency rises. With good power supply design and strong output stages, damping factor can mean less to the sound of an amp.
The proof is in the pudding, so there's no substitute for listening.
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