Helios 2128 preamp circuit with 70dB of gain in 5dB increments. 20dB pad, Lustraphone input transformer. A balanced line in section is also featured. Inductor based LF/MF EQ section with selectable LF and MF and fixed 10Khz HF controls.
The API Select T25 is a classic 2-channel, FET feedback-style compressor/limiter with a Class-A tube output stage that utilizes a custom API transformer. Built with 12AT7WC and 12BH7 dual-triode vacuum tubes, the T25 represents a new direction in API's line of compressors.
The API Select T12 is a classic 2-channel, all-tube, Class-A microphone preamplifier designed with API's proprietary AP2516 transformer in the input stage and a custom API transformer on the output stage. Built with 12AT7WC and 12BH7 dual-triode vacuum tubes, the T12 represents a new and exciting variation in API's preamplifier technology and provides the user with unique tonal options.
Undertone Audio Unfairchild 670M II 2-Channel Tube Compressor / Limiter.
Featuring the Lundahl LL1538, TRS line input, and Switchable input impedance including classic ISA 110 setting.
Features Mic Gain, Trim, Silk button / Texture control, Level Meter, Polarity, High Pass Filter, Phantom Power, -6dB Output.
2-channel mic/line preamp card for Pro Tools MTRX
2-channel Microphone Preamplifier, 2 DI's, Hi Pass, Impedance, Line, 20dB Pad, Phase, +48V Phantom, external 24V PSU 1RU 19" Rackmount
Classic ISA mic preamp design featuring Lundahl LL1538 input transformer with dedicated TRS line input socket with front-panel switch.