SmashQuiet attenuator upgrade for the Smash preamp


Our stepped attenuator upgrade for the BeePre preamp has been so well received that we decided to offer a similar upgrade for the Smash preamp.

When we were developing our premium BeePre 300B preamp kit we built the prototype preamp circuit itself on a pair of chassis, and we built several outboard chassis platforms that allowed us to try various attenuator schemes. We tried all sorts of schemes – inexpensive carbon potentiometers, our old standby Sweetest whispers attenuator, high end stepped attenuators from other manufacturers, transformer volume controls, ladders, shunts, series steps, etc., etc.

Our old faithful Sweetest Whispers attenuator floated to the top of these various setups. But we felt the Whispers had room for improvement in two areas. One was that the steps were rather big. The other was that we had always used inexpensive switches to keep the price reasonable.

Save 10% when you buy 2 or more (when not on sale). Shipping can take from a couple of days up to 6 weeks here’s why.

SKU: SMAQ Category:


Quick Description

We felt that an “ultimate” attenuator needed to be done to a higher standard and we felt that it would be reasonable to make the kit similar in price to the other high end attenuators on the market. So we got very high quality rotary switches and PB put his math degree to work coming up with a very useful thirty-six 1.5dB steps, yielding a total -52.5db of attenuation. Yes, you read that right, 36 steps. We accomplish this with two six position switches, one a stereo coarse control with 9db steps and the other a stereo fine control with 1.5 db steps. Simply set the coarse control in the general range you want to listen and then use the fine control to get the level perfect.


The switches are populated with Vishay Dale metal film resistors, a resistor that has remained a favorite of ours over the years for attentuator use. Coarse and fine stereo level switches replace the stock carbon pot volume and balance controls in the Smash. They mount on a custom aluminum sub-chassis, and we provide a neat overlay for the top of the chassis, with attenuation settings, input selector setting and a cool vintage look.

Additional information

Weight 1 lbs
Dimensions 8 × 8 × 4 in

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