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White rotary speaker volume control with almond and ivory knob inserts, color-coded solderless terminals visible on the back

Monoprice Inc.

Monoprice 138168 120-Watt Rotary Volume Control, 12-Position, 36dB, Solderless Terminals

SKU CH-ZDFS-QBGCV

A 120-Watt rotary speaker volume control with a 12-position switch providing 36dB attenuation and solderless terminals

  • TypeAudio Adapters
  • ColorMulti-Color
  • Weight0.82
  • FeaturesAudiophile sound quality, with virtually no high-end or low-
  • Audiophile sound with virtually no frequency roll-off
  • Non-shorting design protects amplifier from damage
  • Solderless terminals enable quick, tool-free speaker wiring
  • 12-position switch provides 36 dB total attenuation
  • Includes white, almond and ivory knob inserts

120-Watt Rotary Volume Control

The Monoprice 138168 is a 120-Watt rotary resistance speaker volume control designed for multi-room audio installations. It provides audiophile sound quality with virtually no high-end or low-end roll-off. The 12-position switch delivers 36dB total attenuation including Off, two 6dB steps, seven 3dB steps, and full-on settings. White, almond, and ivory inserts and knobs are included to match common wall-plate colours.

Solderless Terminals For Easy Wiring

Color-coded, right-angle, solderless speaker terminals allow quick top termination without a soldering iron. The non-shorting design protects the connected amplifier from damage during adjustment. This accessory fits into a standard wall-box location and connects between the amplifier output and the speaker pair, freeing the installer from running separate control cables back to the rack.

Passive Operation With No Power Draw

As a passive resistive attenuator, the unit draws no mains power and generates no heat or fan noise in normal use. The 0.82 lb chassis mounts flush to the wall and operates silently. It is not suited for buyers who need remote or app-based control, nor for systems requiring impedance-matching across multiple speaker pairs.

Highlights

  • Audiophile sound with virtually no frequency roll-off
  • Non-shorting design protects amplifier from damage
  • Solderless terminals enable quick, tool-free speaker wiring
  • 12-position switch provides 36 dB total attenuation
  • Includes white, almond and ivory knob inserts

Specifications

BrandMonoprice
Model138168
Part Number138168
TypeAudio Adapters
ColorMulti-Color
Weight0.82
FeaturesAudiophile sound quality, with virtually no high-end or low-end roll-off.

Questions about this item

How many watts can the 138168 handle continuously before the attenuator becomes the limiting factor?

The control is rated for 120 watts per channel, so sustained use at or below that level will not make the attenuator the first limit.

Does the rotary switch generate noticeable heat or noise when left at high volume all day?

It is a passive resistor network with no active components, so it produces no fan noise and negligible heat at normal listening levels.

What speaker-cable gauge do the solderless terminals accept without extra connectors?

The right-angle, color-coded terminals accept bare wire directly; no banana plugs or spade lugs are required.

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