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Big Knob Passive studio monitor controller with large volume knob and source select buttons

ASUS Audio Component

SKU CH-8C6V-HT5GZ

Passive studio monitor controller with source switching, mono, mute and dim functions for precise level control

  • Sports Team1 Piece
  • Precise level control with Mono, Mute and Dim buttons
  • Switch between two sources and two monitor pairs instantly
  • Passive design delivers pristine audio quality without coloration
  • Studio-grade monitor controller built with sturdy tank-like construction
  • Single-piece unit integrates source selection and volume control

Studio Monitor Controller

The Big Knob Passive is a non-powered 2x2 signal attenuator built for project and professional studios that need transparent level control and source switching without adding colour to the signal path. It serves engineers who want a dedicated hardware knob for instant volume adjustments while keeping the audio chain completely passive.

Desktop Integration

The unit sits on a desk and connects via its rear-panel I/O to two stereo sources and two monitor pairs, with front-panel Mono, Mute and Dim buttons for quick checks. Because it requires no external power supply, installation is limited to cabling; the only common issue is ensuring balanced or unbalanced connections match the studio gear to avoid ground loops or level mismatches.

Extended Session Behaviour

With no active circuitry the attenuator introduces no self-noise, distortion or thermal drift regardless of how long the session runs. The passive design means signal integrity stays consistent at any attenuation level, and the sturdy metal chassis maintains reliable contact resistance over years of daily use.

Highlights

  • Precise level control with Mono, Mute and Dim buttons
  • Switch between two sources and two monitor pairs instantly
  • Passive design delivers pristine audio quality without coloration
  • Studio-grade monitor controller built with sturdy tank-like construction
  • Single-piece unit integrates source selection and volume control

Specifications

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Questions about this item

How do I verify the Onyx recording is capturing at 192 kHz after connecting my sources?

Check your DAW sample-rate setting; the Onyx interface supports up to 192 kHz so the session must match that rate for high-resolution capture.

Which cables or adapters must I buy separately to connect two monitor pairs and two sources to the Big Knob Passive?

The unit provides balanced 1/4" TRS and XLR I/O; purchase matching cables for each source and monitor pair you intend to connect.

Should I choose the Big Knob Passive, Studio or Studio+ model for a setup that needs dual Onyx preamps with 60 dB gain?

Only the Studio and Studio+ include dual Onyx mic preamps with 60 dB gain; the Passive model has no preamps.

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