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Chameleon Labs 7603 Line/Mic/DI Pre-Amplifier

7603 Line/Mic/DI Pre-Amplifier with Turn Pre-Amp On - VU Meter Light, 300Ω / 1200Ω Switch, 48v Phantom Power Switch, DI Switch, EQ Switch, Polarity Switch, Mic/Line Sensitivity Switch, High-Pass Filter, and XLR, and TRS Inputs.


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MSRP: Old Price $799.00 Discounted Price $699.00 Save : $100.00 (13%)
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MSRP: Old Price $799.00 Discounted Price $699.00 Save : $100.00 (13%)
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The 7603 is Chameleon's flagship pre-amplifier, representing a leap forward in analog design, performance, versatility and value. It is the true embodiment of our philosophy - Analog for the digital age. These enhancements start with proprietary microphone and line-level input transformers that feature custom-made nickel laminations and bobbin assemblies—all designed in-house. By developing engineering processes focused on the material science associated with lamination manufacturing, Chameleon was able to develop a lamination "recipe" that delivers optimized audio performance, providing the 7603 with high bandwidth and incredibly low-distortion.

EQ Shelving
The 7603 features EQ stages with four different available adjustments—Variable High-Pass, Low-Frequency Shelving, Mid Frequency and High Frequency Shelving. Chameleon's engineers made a conscious decision to stay with the same, desirable, inductor-based topology that made their 7602 so popular, however they implemented their discrete Op Amp to drive signal through a set of custom Chameleon designed and manufactured inductors, providing the musicality all love's to uses.

Variable-Gain Circuit
The output stage of the 7603 is unique with respect to its design and performance. It can be described as a variable-gain circuit that simultaneously adjusts both the input and output levels in order to generate a lower noise floor and extraordinary audio performance. The 7603 pre-amplifier provides a desirable set of user selectable functions designed to make the unit flexible and an integral part of the artistic process, incorporating a full portfolio of traditional features as well as some not commonly seen on other pre-amps.

Microphone input impedance can be selected between 300 and 1200 ohms, providing a method by which a microphone can be more ideally matched to the input stage and making it easier to get the best from lower output microphones such as ribbon-based designs. Chameleon Labs added a low-impedance Direct Input on the front panel for plugging in instruments such as guitars that can be run through the line input stage, and added a precision VU meter with custom ballistics for visual monitoring of either the input or output levels.


  • Chameleon wound microphone and Line Input transformers and Chameleon output transformer, all with mu-metal housings
  • High resolution, low noise discrete audio circuitry
  • Hi-Z Direct Instrument Input (TRS)
  • Discrete Class A Electronic Topology
  • Three band, inductor-based EQ
  • 48V phantom power for mic input
  • Selectable 300Ω or 1200Ω Mic Input Impedance
  • Custom VU meter (input/output) with calibrated ballistics
  • Relay based selection of Line / Mic & DI Inputs
  • Overload input and output indicators
  • Reverse Phase Switch
  • Universal, on-board power supply

Get your Chameleon Labs 7603 Line/Mic/DI Pre-Amplifier today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Microphone Preamp


by PowerReviews
Number of Channels 2
Frequency Response 10Hz-20kHz
XLR Inputs 1 input
XLR Outputs 2
1/4" Inputs 1
Analog Inputs Number 1
Analog Outputs Number 2
Gain Range +10dB to -60 dB
Connectors 3 x XLR, 1 x TRS
Compressor No
Side Chain I/O No
EQ Yes
Phantom Power Yes
Additional Controls/Features
  • Turn Pre Amp On - VU Meter Light
  • 300Ω / 1200Ω Switch
  • DI Switch
  • EQ Switch
  • Polarity Switch
  • Mic/Line Sensitivity Switch
  • High Pass Filter
  • Computer Connectivity None
    Series 7603 Series
    Model 7603
    Information not available

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