GTP1 Single Channel Mic Pre
gtp1-1-channel-mic-pre
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Specifications
- Input impedance: 1200 Ohms
- Output impedance: <50 Ohms
- DI Input impedance = 10 mOhm
- Noise at +80dB gain, terminated 200 ohms: EIN better than -127 dB
- Frequency response: -1 dB at 20 Hz and >50 kHz
- Distortion plus noise at unity gain at 1 kHz: <0.05%
- Maximum output: +26 dBu
Description
The Aurora Audio GTP1 is a single channel preamp using the same circuitry as the GTP8 units and is basically a GTQ2 minus the EQ part. It is not a clone of anything. It is an Aurora Audio design using their exclusive input and output transformers.
The DI is a pair of boot strapped transistors and provides an input impedance of 10 mOhm and an additional 10 dB gain. Guitar pickups will be unloaded and, unlike lower impedance systems, every nuance of the sound will be captured.
The GTP1 can accommodate any signal you care to throw at it, including high-level line inputs. The sensitivity switch provides gain adjustment in 10 dB steps from +80 dB to -10 dB and the level pot allows for fine adjustments of level between +6 dB and -6 dB.
The GTP1 has a built in switching power supply, custom made to Aurora's specs, with a massive power headroom and can accommodate input voltages in the range of 85 V to 265 V, 50/60 Hz. All metalwork is steel - Aurora don't use aluminum for anything.