The Chameleon Labs 7603 is a meticulously engineered, flagship analogue microphone preamp with three-band inductor EQ. This unit is a complete redesign of its predecessor (the 7602), and introduces high-end discrete Class A op‑amps, three custom-wound MuMetal‑shielded transformers (mic, line, output), SMT construction, quality film resistors, and a switch‑mode universal power supply.
Chameleon Labs 7603 features a Hi‑Z front‑panel direct instrument input, selectable mic input impedance (300 Ω or 1 200 Ω), variable gain with extremely low noise, overload indicators for both input and output, a reverse‑phase switch, and precision VU metering. The build is robust, housed in a 1 U steel rack enclosure with an aluminium front panel and milled knobs. The Chameleon Labs 7603 is designed and built in North America
Features
- CL Custom‑Wound Mic Input Transformer in MuMetal housing
- CL Custom‑Wound Line Input Transformer in MuMetal housing
- CL Custom‑Wound Output Transformer
- Hi‑Z Direct Instrument Input (TRS) on front panel
- Discrete Class A electronic topology
- Variable‑gain, super‑silent output stage
- Input and output level monitoring via VU meter
- Selectable 300 Ω or 1 200 Ω mic input impedance
- Inductor‑based 3‑band EQ and high‑pass filter
- Overload indicators for input and output levels
- Reverse‑phase (polarity) switch
- Internal universal switch‑mode power supply (100–240 V)