Problem with preamp volume control

Using the lowest gain setting on the amplifier may also have subtle benefits for SQ overall.  That is without a doubt the first thing to try, IMO.

Well, the amp settings did the trick.
Of course, in the back of my mind is Benchmark’s recommendation, which I’ll have to forget about.
I think the problem is solved.
It still sounds great!

Thanks to all, especially antinn and Al.

Viva Benchmark!

Lewm,

I think you’re right.
 It’s sounding even better.

Great that you have it solved.
To summarize my comments on the various options.
1. Al was spot on. hey. he's two for two in my book this week.
2. messing with cartridge loading (between cart and phono preamp) is dicey unless you redesign the interface as a system, and with full schematics.  Simple answer: if you have to ask, don't.3. You can often modify the line or amp gain - and its far less sensitive to various loads in those places. Sometimes even a setting.
4. You can successfully add an attenuator between a preamp and amp, but again need to know the I/O impedances first. IN fact nearly every amp has a voltage divider of sorts right at the front end.  Simple to just change its ratio.

Comment:  18 dB in a in the stage is a huge amount! I typically have 6!  and at most common knob settings, its fractional. Yikes!
G

ps: rare problem!  Most people don't have enough gain with low output 'coils. Tons of gain without noise or hum (which is a form of noise, ok, ok) is tough.  be happy you have it.