Visual Audio Splitter Amp- Joiner 12 Serial May 2026

Despite its age, the Model 12 Serial is sought after by modular synth enthusiasts and experimental producers for three reasons:

| Parameter | Value | | :--- | :--- | | Frequency Response (20Hz–20kHz) | ±0.2dB (Unity), ±0.8dB (Max Gain) | | THD+N @ 1kHz, Unity | <0.01% | | THD+N @ 1kHz, +12dB gain | <0.5% (2nd harmonic dominant) | | Signal-to-Noise Ratio (A-weighted) | -86dB (Stage 1 only), -62dB (All 12 THRU) | | Maximum Input Level | +22dBu (with pad) | | Maximum Output Level (per split) | +18dBu | | Crosstalk (between stages, 10kHz) | -55dB | | LED Visual Response Time (Fast mode) | 5ms rise, 15ms fall | | Power Consumption | 120V AC, 45VA, 500mA fuse | visual audio splitter amp- joiner 12 serial

The noise floor increases by approximately 3dB for every two stages engaged in THRU mode due to cascade noise accumulation. This is a known design limitation—Visual Audio prioritized the “analog warmth” of cascaded discrete transistors over low noise. Despite its age, the Model 12 Serial is

Producers need to talk to 12 on-air talents. The joiner function allows 12 microphone inputs to be summed to a single broadcast feed, while the splitter function sends the producer’s cue to all 12 talents simultaneously. Producers need to talk to 12 on-air talents

The Model 12 Serial is housed in a 3U, 19-inch rackmount chassis, weighing approximately 8.2 kg (18 lbs). Its signature aesthetic is a brushed aluminum faceplate with deep-red anodized trim.

In a stadium with 12 speaker zones (under-balc, delay towers, front-fill), you need to split the Left, Right, Center, and Sub signals. Use 4 channels as splitters (1 Input to 3 Outputs each) to feed 12 amplifiers. The visual metering lets you immediately spot a zone that has dropped signal.