The Model 7602 MKII Microphone Preamplifier/Equalizer is based on a classic and revered design utilizing pure Class ‘A’ circuitry. This unit is made with 100% discrete components, hand wound transformers and was fabricated to precisely match vintage counterparts manufactured in the early to mid 70’s. The Model 7602 MKII represents a dramatic breakthrough in delivering vintage audio performance at an affordable price.

Equalizer 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.
Model 7602 MKII Features

Fully balanced transformer mic and line inputs
Balanced XLR output
Hi-Z direct input for instruments on the front panel
LED input metering *NEW
Selectable mic impedance switch (300 or 1200 Ohms) *NEW
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
Model 7602 MKII Specifications
Input impedance: Microphone 300 & 1,200 ohms
Line 10,000 ohms
D.I. 100,000 ohms
Sensitivity: Microphone -80dBm to -20 dBm in 5dB steps for 0 dBm output.
Line -20 dBm to +10 dBm in 5 dB steps for 0 dBm output.
Noise: Measured at 80 db of gain with 200 ohm input termination, without 20Hz to 20kHz to assist in filtering out noise.
-49dbu with final output stage at 50% EIN -129 dbu;
-46dbu with final output stage at unity EIN -126 dbu;
-56dbu without final output stage EIN -136 dbu.
Controls either ‘flat’ or switched out.
Output: Balanced and floating to feed a 600 ohm load.
Maximum output +26 dBm into 600 ohms, or +20dBm into 150 ohms.
Output impedance: 600 ohms, balanced (source impedance 75 ohms).
Frequency Response: 11 Hz 77.65 kHz 3 dB.
Level variation is less than 0.2%.
Distortion: 1k Hz = 0.0245%