HADTT73 - 1073 Style Tabletop Stereo Mic Preamp/DI
Standing for DUAL TABLETOP 73, it is in essence a reformatted DMA73.The DTT-73 brings a new flavor to the Heritage Audio line of outboard gear, widening the range of application to On Stage use, portable systems, hotel rooms, On Location recordings, etc.
Now musicians are able to give 1073-driven line levels to FOH engineers, using the front panel DI inputs. While on the road they are able to record at the same studio quality level from hotel rooms, etc. Stage microphones can be brought up to line level without using long cable runs. These are just some of the possibilities.
Special care has been taken with the internal universal power supply so that no noise has been introduced.
The implementation of DI thru jacks allows simultaneous use of instrument amplifiers. A ground lift switch prevents any ground loops introducing hum in the audio when using these.
The combination of wood and RAF blue grey steel makes the tabletop units aesthetically stand out in any professional recording environment.
Features
- Two channels of legendary 1073 sound in a tabletop format
- 80dB Class A Microphone preamplifier
- High gain positions show a higher impedance, ideal for old ribbon mics.
- 50dB Class A Line Amplifier, Bridging input impedance, balanced and floating
- 20dB pad on the mic input prevents overloading the input transformer
- All discrete Class A Ultra High Impedance J-Fet Direct Input, which for adding color and richness to DI instruments
- DI THRU jack with ground lift switch for simultaneous hum free use of instrument amplifiers
- Individual Neutrik gold plated XLR connectors for microphone, line inputs and outputs
- Separate input and output gain controls to drive the input for saturation without overloading the output
- Class A, single ended, 2N3055 driven high headroom output stage.
- High pass filter
- Phase flip buttons
- Carnhill Input and Output transformers
- Internal no noise unviersal PSU
Technical Specifications
- High Pass Filter: 18dB per octave slope, 80Hz, 3rd order Bessel
- Microphone input impedance: HI, 1200 Ohm min., LO, 300 Ohm min., transformer balanced
- Line input impedance: 10KOhms bridging, transformer balanced
- DI input impedance: > 2 Megohms, unbalanced.
- Output impedance: < 75 Ohms, transformer balanced
- Output (max.): > +26dBm into 600 Ohms
- THD: < 0.025% at 1Khz, < 0.05% at 100Hz.
- Frequency response :20Hz (+0.3dB) to 20Khz (-0.2dB).
- Gain (max.): > 80dB (Mic), 50dB (Line)
- Noise: < -100dBm
- Power consumption: 200mA @ 24VDC
- Weight: 3.0 kg
