The 7602 MKII is designed to deliver the "desert island preamp" sound you expect from English console inputs of the '70s along with 3-band EQ. Chameleon Labs incorporated a few, important functions like switchable input impedance to optimize the unit for ribbons/dynamics vs. condensers, a 4-LED input meter, a nice 4-frequency HP filter at 50, 80, 160 and 300 Hz to get rid of the low end junk clogging up your digital recordings and an adjustable high frequency section.
The 7602 MKII makes use of a high end 20 position solid gold gain switch manufactured and imported from Switzerland. This switch is designed for long term use and is typically found in very high end US or Euro units costing a lot more. For the DI input, where there is a lot of rough plugging and unplugging of a ¼-inch jack, we chose a US made Switchcraft DI input jack to greatly improve reliability over jacks that look the same but don't last. Expensive old school US made tantalum capacitors are now incorporated on the main output board because they sound significantly better in this design than the previously used electrolytic capacitors. That's how the original console input was made! Only outboard power supplies are used for lowest noise.
The famous "X-MOD" option offers British input and output transformers from Carnhill/Saint Ives Company, the source of vintage transformers used in the original console. The "X-MOD" is the only way to go, but even without them the 7602 MKII is a remarkable bargain. The 7602 MKII full and warm bottom end and smooth, gentle top is perfect for tracking and a pair are ideal for mixing.
Fully balanced transformer mic and line inputs
Balanced XLR output
Hi-Z direct input for instruments on the front panel
LED input metering
Selectable mic impedance switch (300 or 1200 Ohms)
48VDC phantom power switch
180 degree phase reversal switch
20 position gold contact ELMA rotary gain switch for both Mic and Line sections
Output level control functions as a fader when going straight to tape
The EQ Section (Selectable 3-band design with a flexible filter section)
Filter - This is a high pass filter with 3db loss at 300Hz, 160Hz, 80Hz, and 50Hz with an 18db cut per octave slope.
Low Equalization - This section has a shelving slope with four frequency selections: 220Hz, 110Hz, 60Hz, and 35Hz. This equalizer affects the selected frequency and all others below it. The gain control provides 20db of boost or cut.
Mid Equalization - This section has a peaking characteristic with six frequency selections: 360Hz, 700Hz, 1.6k, 3.2k, 4.8k, and 7.2k. The gain control provides 20db of boost or cut.
High Equalization - This section has a shelving characteristic with five frequency selections: 16k, 12k, 7k, 4.9k and 3.4k. This section adjusts the selected frequency and all others above it. The gain control provides 20db of boost or cut.
By employing classic circuit design, polystyrene capacitors, a gold contact ELMA gain selector and custom wound transformers, Chameleon Labs ensures that the Model 7602 MKII will exhibit classic audio sound.
The Model 7602 MKII has a transformer balanced input with a range between 20dB and 80 dB of gain. The separate line input is transformer balanced and accepts input levels from -20 to +10dB.
External In-Line Power Supply : Each Model 7602 MKII ships with an in-line power supply, type-dependent on country of operation. This is not a traditional "wall-wart" but simply an outboard AC transformer. DC filtering and regulation is accomplished inside the 7602 MKII itself.