PRE 564
A full analog 64V internally powered ultra-low-noise Class-A
preamplifier with 30 dBu of headroom.
64V Linear PSU
All the 30 dBu headroom of a 64V ultra-low-noise shielded power supply inside a 500 module.
Input Balancing
Front Control Switch with Post-Gain Transformer Option.
Engage the post-gain transformer to push the amplified signal into a Carnhill input transformer, delivering a warm, rich tone.
Alternatively, choose the transformerless balancing option whenever you prefer.
Output Balancing
Jensen Output Transformer for high quality and ultra-low-distortion isolated output driving.
Local Sealed Relays
Ensure reliable and low-noise signal amplification with minimal signal routing.
Gain
Up to +80 dB of ultra-low-noise Class-A gain for demanding inputs, with noise levels as low as -130 dBu.
Input
Utilize the same input, features, and controls for various input types:
microphone, line and D.I. (Hi-Z) inputs.
PAD-Less
Handle input signals up to +24 dBu without the need for a PAD insert, further reducing the signal noise.
Controls
TRAFO: Engages the post-gain Carnhill input transformer, or bypass it prefering electronic balancing.
Hi-Z: Connect your instruments with the same line/microphone signal path features options.
Phase: Standard phase inversion option.
48V: Hold to activate/deactivate. Always starts OFF to reduce the risk of accidental use with sensitive microphones.
BOOST: Adds a second +20 dB post-fader gain stage.
Metering
Output: Fast-response LED bar with peak detent function.
Input: Peak LED illuminates with stage saturation level.
Specifications
Gain:
0 dB to 60 dB – Continuous (80dB with Boost)
Freq. Response (-3 dB):
Below 5 Hz to above 40 kHz
Input Noise:
-130 dBu EIN @60 dB Gain
Input Impedence:
2,4 kOhm Mic/Line
1 MOhm Hi-Z
Maximum Input Level:
24 dBu Mic/Line
17 dBu Hi-Z @0dB gain
Maximum Output Level:
24 dBu on 600 Ohm
Output Impedance:
80 Ohm
48V Maximum Current:
14mA (provided by 500 rack)
Max. Current Absorption:
130mA for ±16V (provided by 500 rack)
Working Temperature:
Below 40°C and above -10°C
Measures:
175mm x 133mm x 38mm
Weight:
820g