Pure Tube Channel
Preamplifier
The Pure Tube Channel is a no-compromise, class-A tube preamp designed around a minimal, fully analog signal path. At its core are an IGS Custom input transformer, military-grade 6N2P-EW and 6N1P-EW tubes, and an IGS Custom output transformer, joined by just two Mundorf capacitors. This restrained architecture preserves harmonic richness while keeping non-harmonic distortion exceptionally low. The result is a preamp that delivers authentic tube depth, natural saturation, and exceptional clarity. With transformer-balanced I/O and a dedicated high-impedance instrument input, it is equally at home tracking vocals, instruments, and pristine DI sources.
Pure Tube Signal Path
Built with a deliberately minimalistic design, the signal path uses only essential components to preserve tone integrity. An IGS Custom input transformer feeds two military-grade tubes, 6N2P-EW and 6N1P-EW, operating in true class A. Only two Mundorf capacitors are used, ensuring classic tube character with extremely low non-harmonic distortion.
High-End, No-Compromise Design
Every component is chosen for sonic performance rather than convenience or cost. The result is a preamp that feels immediate, harmonically rich, and dynamically responsive, without unnecessary coloration or congestion.
High-Impedance Instrument Input
A dedicated Hi-Z input allows direct recording of guitar, bass, and sound modules straight into the tube grid. This provides proper impedance matching, low noise, and subtle tube coloration, ideal for clean DI tracks and amp-modeling workflows in modern DAWs.
Transformer-Balanced Input and Output
Both input and output stages are transformer-isolated, delivering galvanic isolation, excellent CMRR, and musically pleasing harmonic enhancement. Balanced XLR connections and accessible tube sockets complete a professional, studio-ready design.
Specifications
| Stepped Manipulators | Yes |
| Gain / Trim Steps | 6-step Gain / 41-click Trim |
| Engineer’s Custom Tube Set | Yes — 6N2P, 6N1P, 6B23P, 6BC8, 6BZ8 |
| Input Impedance Balanced |
300 / 1200 Ω (Carnhill transformer) or 1 MΩ (Hi-Z instrument input) |
| Input Pad | −20 dB |
| Output Impedance Balanced |
600 Ω |
| Phantom Power | +48 V |
| Operating Level | +4 dBu |
| Maximum Input Level | +18 dBu |
| Maximum Output Level | +22 dBu |
| Maximum Gain | +65 dB |
| Noise Level | −110 dB |
| Frequency Response | 20 Hz – 20 kHz ±0.2 dB |
| THD+N | <0.1% |
| Voltage | 115 / 230 V AC, 50–60 Hz |
| Power Consumption | 24 W |
| Power Supply | Internal, linear |
| Shipping Weight | 6 kg |
| VU Meters | Yes, output level |
