Remote volume control = unacceptable compromise?


Reading through some of the threads it seems that the absence of a remote control on a pre or integrated is a ‘deal breaker’ for some here. These are my experiences. A couple of years back, at a private listening session with a maker (anonymous ‘cos it really doesn’t matter who because the thread might loose focus) had 2 preamps identical other than one had a remote volume control and other was manual. Both volume controls made by Alps. Apparently these are among the best.

Using a digital source with twin analogue outputs and full-range speakers and a sophisticated SPL meter the system was set up to switch, using a Manley Skipjack, between the two preamps. At identical SPLs for both, the differences were clear. At low SPL, detail retrieval was reduced when the remote control was used. At normal listening levels the differences were slight and at realistic levels the remote unit sounded a bit harsh. Or perhaps the manual unit was less detailed? Hard to say for sure.

There was a difference. The amp designer didn’t prime us with his own opinions. The preamps were behind us. Switching was random.

It was a bit of a ear-opener for me. Based on this the designer decided not to proceed, for the foreseeable future, with a remote preamp. This was because of unacceptable sonic compromises. He pointed out that while circuits can be constructed by him with endless different component configurations, neither he nor his competitors were in a situation to build from scratch a remote control volume mechanism. He reasoned that his years of work should not be compromised because of the compromises made by OEM suppliers.

Some pointed out that he was missing a part of the market. He agreed – but said while acknowledging this, he felt his buyers valued performance over convenience. Before the demo I’d have disagreed. During the demo though, I changed my mind. Nothing has happened to me since that time to change back.
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Showing 2 responses by mulveling

Those off the shelf blue alps (basically a motorized RK27, which itself is a $15 part) are not adequate for very high quality preamps, though you'll often see them in units up to around $4K MSRP. As noted, there are a number of other remote control solutions that don't sacrifice sound quality.

The original Rogue Hera, which I use myself, has a motorized stepped attenuator (as did the more affordable Athena). The mechanism is by far more substantial and impressive than the cheap alps. While the action isn't the smoothest, it serves its purpose (remote control), and the sound quality is without fault. A few years ago Rogue switched to a motorized TKD pot, because lots of folks don't like steppers, but I love mine and kept it through the upgrade to Hera II status. Wouldn't part with mine. I wonder if Rogue would still build a stepper unit by request.

I think VAC's new Statement preamp uses an Alps RK50 pot -- which (unlike the RK27) IS an impressive top class volume control, and I believe they've motorized it. I mean, at the cost of this unit, it MUST be remote controlled, right?
Yeah, to echo Grannyring again, the Alps blue pots suck for high-end audio applications. They're cool for say a $600 headphone amp or an entry level hifi integrated/pre, but I shudder seeing pics of (for example) a $4K preamp's internals with the telltale blue plastic box and small metal cylinder stuck on its back (the motorized version). If that's what was referred to in the OP's post, then the remote control implementation wasn't a serious effort.

And yes, I've heard the difference...for example, even those headphone amps improve notably when you ditch the RK27 pot for a good stepped attenuator. The cleanest sounding gear I've heard so far has used stepped attenuators. And it shouldn't be that hard for a competent engineer or 2 to motorize, especially given the price points of some of this gear.