Warm Tips:

Please use high-quality RCA cables with good shielding performance, otherwise there will be noise.
With no gain, no any amplification, only control the signal from the audio source to the backend devices.
Why use passive preamp?
Many sound sources such as HIFI PC sound cards, DAC, CD players, are with high output signal. Some active speakers and pure power amplifiers have high gain themselves, so they don't need an active preamp to amplify the signal. Passive preamp is the best choice to reduce the sound rendering to the greatest extent because of no power transistor.

Parameters:
Brand: Nobsound
Model: VOL-3
Audio input: Stereo RCA
Audio output: Stereo RCA
Power required: No
Color: Black
Dimensions (W*D*H): 94 × 52 × 43mm / 3.70 × 2.05 × 1.69in
Package dimensions (W*D*H): 180 × 88 × 70mm / 7.09 × 3.46 × 2.76in
Net weight: 224g / 0.49lb
Package weight: 300g / 0.66lb
Packing List:
1 * Passive preamp