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Kopul VOL-MATE-P Inline 1/4" TRS Volume Control

BH #KOVOLMATEP • MFR #VOL-MATE-P
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Kopul VOL-MATE-P Inline 1/4" TRS Volume Control
Key Features
  • Volume Control for Project & Pro Studio
  • 1/4" TRS/TS Input and Output Connectors
  • Stepless Volume-Attenuation Knob
  • Passive Design, No Power Required
The Kopul VOL-MATE-P is a passive controller designed to precisely adjust or mute the volume from mono guitars, mono/stereo keyboard and headphone outputs, and other 1/4"-equipped audio devices in any project studio, pro studio, or live-sound setup. Place it inline between devices that use 1/4" TRS or 1/4" TS connectors and the stepless knob allows you to adjust the volume conveniently without accessing the controls on your audio interface, mixer, or effects processor.
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Kopul VOL-MATE-P Overview

The Kopul VOL-MATE-P is a passive controller designed to precisely adjust or mute the volume from mono guitars, mono/stereo keyboard and headphone outputs, and other 1/4"-equipped audio devices in any project studio, pro studio, or live-sound setup. Place it inline between devices that use 1/4" TRS or 1/4" TS connectors and the stepless knob allows you to adjust the volume conveniently without accessing the controls on your audio interface, mixer, or effects processor.

Thanks to its passive design, the VOL-MATE-P does not alter or color the audio signal, ensuring you hear exactly what's coming from your source device. It also does not require power to operate. Compact enough to slip into your pocket, the VOL-MATE-P features a durable steel chassis that withstands the bumps and bangs of travel. Additionally, its nonslip rubber feet keep it stable on your desktop, so it's always within reach.

1/4" TRS and 1/4" TS Inputs and Outputs
  • The VOL-MATE-P accommodates both balanced and unbalanced signals, faithfully passing through the signal it receives.
  • For mono sources like a guitar, it outputs a mono signal to an amp or mixer.
  • When handling stereo sources from a computer or keyboard, it maintains the stereo image for output to headphones, an interface, or a mixer.
  • Additionally, the VOL-MATE-P can serve as an effects return in live setups, offering a convenient volume control when a dedicated fader isn’t available on the soundboard.
Setting up the VOL-MATE
  • The VOL-MATE volume controller does not amplify sound.
  • Set your source device to the highest volume you intend to use.
  • Turning down the volume knob attenuates the audio signal.
  • At full volume, the VOL-MATE outputs the same level as the source device.
UPC: 847628536166

Kopul VOL-MATE-P Specs

Key Specs
In-Line Accessory Type
Attenuator/Pad
Input / Output Level
Input: Line Level
Output: Line Level
Number of Channels
1
Controls
1x Input Level/Gain Knob
Inputs/Outputs
1x 1/4" TRS Female Balanced/Unbalanced Line Input
1x 1/4" TRS Female Balanced/Unbalanced Line Output
General
In-Line Accessory Type
Attenuator/Pad
Input / Output Level
Input: Line Level
Output: Line Level
Number of Channels
1
Controls
1x Input Level/Gain Knob
Indicators
No
Connectivity
Inputs/Outputs
1x 1/4" TRS Female Balanced/Unbalanced Line Input
1x 1/4" TRS Female Balanced/Unbalanced Line Output
Physical
Shielded
No
Dimensions
3 x 2.3 x 1.4" / 7.6 x 5.8 x 3.6 cm
Weight
6.8 oz / 193 g
Packaging Info
Package Weight
0.565 lb
Box Dimensions (LxWxH)
4.1 x 4 x 2.9"

Kopul VOL-MATE-P Reviews

Terrible quality

By Tom
Rated 1 out of 5
Date: 2026-06-21

Bought for the claim of easy passive volume control, and using in association with my six-line distro head amplifier. The control pots have no actuation until they're almost all the way up, meaning that they don't really turn anything up or down as much as they can turn it on or off. Absolute waste of money, and by the time I figured it out I'm beyond the return window. Don't waste your time or your cash

Doesn't work for piezo pickups

By Leonard
Rated 3 out of 5
Date: 2026-01-05

Apparently needs more power coming through than a piezo pushes. I wish the description said so.

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