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Silver metal box with four large volume knobs, multiple 3.5mm and 6.35mm jacks, RCA inputs, stereo/mono switch, mute buttons

STABCL 4 Channel Headphone Amplifier Stereo Mono Splitter 3.5mm 6.35mm RCA Input 8 Outputs

SKU CH-9SQA-QXB56

A four-channel headphone amplifier with stereo/mono switching, RCA, 3.5 mm and 6.35 mm inputs, and eight independent outputs with per-channel volume control

  • Product color4 Channel
  • Product dimensions4.5 L × 9 W × 2 H inches
  • Product weight0.49 kg
  • Clear sound via pro op-amp and noise-reduction chip
  • Versatile I/O: RCA, 3.5 mm, 6.35 mm in; eight headphone outs
  • Four independent volume knobs each drive one 3.5 mm and one 6.35 mm jack
  • Stereo/mono switch plus per-input mute buttons for quick control
  • Compact aluminium CNC chassis (4.5 L x 9 W x 2 H in, .49 kg) with 5 V adapter

Four-channel headphone distribution

The STABCL 4 Channel amplifier splits a single source into four independent headphone feeds, each with its own volume knob. It accepts stereo or mono signals through 3.5 mm, 6.35 mm and RCA inputs, then mirrors each channel to both a 3.5 mm and a 6.35 mm output for a total of eight connections. The unit is aimed at project studios, podcast tables and small live-rig monitoring where multiple listeners need separate level control.

Sustained session reliability

A 5 V external adapter powers the internal op-amp and noise-reduction circuit, keeping the signal clean during long recording or rehearsal periods. The aluminium chassis acts as a heatsink, so the amplifier maintains consistent output without thermal throttling when all four channels drive demanding headphones simultaneously. Individual mute switches on every input let you silence a source instantly without unplugging cables, preserving the gain structure for the remaining channels.

Upgrade from passive splitters

Replacing a passive Y-cable or single-knob splitter removes the volume tug-of-war between performers and restores headroom lost to impedance loading. The jump is worth it when you need per-person level autonomy, stereo/mono summing on the fly, or the ability to mute one feed while the others keep playing. It is not for installations requiring more than four independent monitor mixes or for users who need balanced line-level outputs instead of headphone-level signals.

How it compares

Measured against everything we stock in Pro Audio Equipment, at today’s prices. Recalculated every night.

Price $36.99
Cheaper than about 64% of the 613 comparable items (median $56.99).

Specifications

Product
Brand nameSTABCL
Model name4 Channel
Product color4 Channel
Size & build
Product dimensions4.5 L × 9 W × 2 H inches
Product weight0.49 kg

Questions about this item

How much heat or noise does the 5 V power adapter produce when the amplifier runs all day?

The unit draws power from an external 5 V adapter and uses an aluminium-alloy CNC chassis that passively dissipates heat; no fan is fitted, so operation is silent.

Which cables or sources must I already have to connect audio to the RCA, 3.5 mm and 6.35 mm inputs?

You need source devices with RCA line outputs, 3.5 mm stereo jacks or 6.35 mm TRS jacks, plus the matching interconnect cables for each input you plan to use.

Will the four independent volume knobs still drive older high-impedance headphones plugged into the 6.35 mm outputs?

Each knob controls one 3.5 mm and one 6.35 mm output simultaneously, so legacy high-impedance headphones on the 6.35 mm jacks receive the same adjustable level as the 3.5 mm outputs.

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