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In Reply to: RE: Parasound A23 posted by DanS on April 01, 2017 at 12:37:26
Two separate volume knobs for L and R are very inconvenient to use as volume control.
They are for fixed gain adjustment to improve total system S/N (or to have volume knob on pre-amp at the angle range with small channel error), and for fixed L/R balance control.
Once one touches the big volume control knobs during cleaning etc., one needs to re-adjust the L/R balance with test signal and multi-meter. The pair of big separate continuous knobs is a design mistake.
The knobs should be small and recessed if it is continuous adjustment type, or the attenuator should be stepped attenuator. If the designer intended everyday volume control, it should be a single stereo knob on the front panel.
Having separate volume gain/attenuation controls for each channel is potentially superior to the "volume knob/balance control" design, circuit design speaking.
'Course, I don't know shit about circuit design, so...
with my DIY box using DACT stepped attenuators (JC-2 like box in the middle) and didn't find adjusting balance that difficult with them.
The GamuT CD-1 sounded better with them than going through the SP-9MKIII's line stage. :)
I don't know if it matters for most of us in the regular world, but certainly, from a design and fidelity perspective, two separate gain or attenuation controls does make sense.
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