2-Channel High Gain FET Preamplifier - Specially Designed for Ribbon Microphones
With tons of excellent ribbon mics on the marketplace these days, it's surprising that no one has stepped up with a mic pre idealized for the idiosyncrasies of ribbons.
Until AEA, that is.
The TRP - The Ribbon Pre, get it?! - has 83 dB of super clean gain, a minimal circuit path, and no phantom power to accidentally fry your prized ribbon mic with.
Designed by Fred Forssell, the AEA Ribbon Mic Preamplifier is an ultra high-gain and impedance, minimal-path FET mic pre, and its low-noise two-channel preamp is ideal for moving coil, ribbon, and tube mics that doesn't use or want phantom power. This results in improvements in minimal path circuitry, ridding the unit of phantom-power blocking capacitors. Zener diodes on the input protect the input stage if external phantom power is applied.
First stage gain is set from +6 to +63 dB by a 12 position Grayhill switch. Another 20dB of gain is available after the output level potentiometer. Polarity reversal and high pass switches on the two channels are complimented by operating and overload LED metering.
AEA TRP The Ribbon Pre Features :
- Phase reverse and high-pass switches
- Laser engraved legends and single line schematic
- Anodized gray and black matte finished aluminum
- Switched Gain and Continuous Level Controls
- External power supply for minimum noise
- No phantom power, 18,000 ohms input impedance
- Green and Red LEDs indicates channel level
- Balanced XLR +4, and Unbalanced 1/4 inch -10 o
- Half-rack wide, one rack unit high
* Universal Rack Tray (MidAtlantic UTR1 or Raxxess UNS1) comes with 8-32 screws.
The AEA TRP is the only mic preamp designed specifically for ribbon mics. Unleash your ribbon microphones°Ø full potential with a TRP, and hear music more completely than ever before. Your ribbon mics will sound loud, clean and open, with fuller bass response. AEA's TRP has the quick, quiet gain you need for digital recording of ribbon, moving coil and tube mics.
The Ribbon Pre has the speed needed for high resolution 192 kHz recording. With 300 kHz of bandwidth and our DC coupled, Low-Energy-Storage (LES)TM circuit topology this preamp delivers outstanding dynamic response and bandwidth, and recovers instantly from overloads.TRPs have enough gain to let you hear how noisy the universe really is, but within the limits of physics, provide quiet gain. Our DC coupled mic inputs let you hear all the dynamics, subwoofer bass and fast transients that your ribbon and tube mics can deliver. This discrete front end and integrated circuit JFET design combines the quiet gain of solid state with an openness reminiscent of tubes.
AEA TRP Specifications :
Gain >83 dB at 1 kHz, balanced in to balanced out
EIN (weighted noise figure) -130 dBu, 150 •ÿ input
THD at 1 kHz 0.005% with 22 Hz to 22 kHz bandwidth
Frequency response down 3 dB at 6 Hz and 300 kHz
Balanced mic input impedance >30,000 •ÿ
Balanced outputs clip level above +28 dBu, 100k load
Positive polarity pin 2 on XLRs, tip on ®˘ °∞ stereo jacks
Unbalanced XLR output load reduces max level by ~6 dB
Unbalanced ®˘°± TRS outputs clip level above +22 dBu, 100k load
Microphone input electronics DC coupled
Mic inputs protection zener protected from external P48 DC / shut off while external DC is present
Level Meter :
* Green LED snaps on at ~ - 5 dBu
* Yellow LED is variable brightness from ~ 0 to +20 dBu
* Red LED snaps on at ~ +20 dBu
High-pass filter 12 dB per octave and -3 dB at 100 Hz
Power supply provides two 17.25 VAC outputs
Phantom Power None
Gain switch 12 position Grayhill series 71
Output level control detents at 12 noon
Polarity invert & high-pass pushbutton switches
power supply (P.S.) External for minimum noise
P.S. input & output cords 6 feet long each
115 VAC P.S. uses male grounded Edison power plug
230 VAC P.S. uses male recessed IEC power plug
Chassis P.S. input female 7-pin circular DIN jack
Power-on indication front panel LED
Chassis aluminum with rugged extruded endcaps
Size half-rack wide, rack unit high 8.5°± x 8.5°± x 1.7°± (36.7 cm wide & deep, by 4.3 high)
Weight chassis: 2 pounds, P.S.: 1.5 pounds (0.9 Kg, P.S.: 0.7 kg)
Finish tough, textured, black & gray powder coat
* Options: Dual TRP steel 1 RU rackshelf mounting