AEA TRP500 Preamp Module - Lunchbox 500 Series

AEA TRP500 Preamp Module - Lunchbox 500 Series

The AEA TRP500 is a 500 series preamp that delivers neutral, but rich and musical tonality with up to 85 dB of quiet DC-coupled gain.

Based on the circuit and topology of the company’s original AEA TRP preamp, the TRP500 has the low noise, musical sonics, and ultra-high gain and impedance (100,000 Ohms) that AEA is renowned for. The TRP500 excels at drawing out the warmth and lush sound of ribbon mics as well as other top-level microphones. With up to 85 dB of quiet DC-coupled gain, minimal path architecture, and a gentle 115 Hz or 230 Hz high pass filter, this preamp puts as little as possible between you and your audience

Features:

• Single-channel, 500 series format
• 85dB of quiet, DC-coupled JFET gain
• Ultra-high impedance (100,000 Ohms)
• Switchable 115 Hz or 230 Hz high-pass filter
• Switchable phantom power and polarity reverse

Specifications

• Max Gain at 1kHz: 85 dB of gain, balanced-in to balanced-out
• EIN (Max gain): < –128 dBu (22 Hz to 22 KHz, unweighted, 40 Ohm source), typically -130 dBu
• DC Current Draw: from +16/-16V Rails: 130 mA
• Frequency Response:
• 30 dB gain: (+0/-0.6 dB from <10 Hz to 200kHz)
• 85 dB gain: (+0/-1 dB <20 Hz to >100kHz)
• (+0/-2.5 dB <10 Hz to 200kHz)
• THD+N: 0.0017% (1kHz, 22Hz-22kHz @30 dB Gain +4 dBu output)
• XLR Output Max Level: +28.5 dBu into 600Ω load (before 1% THD)
• Input Impedance: 11.9kΩ (with Phantom), 100kΩ (no Phantom)
• Output Impedance: 50Ω
• Max Input Signal Level: 21.5 dBu at minimum gain (before 1% THD)
• Mic Gain Control: 21.5 dBu at minimum gain (before 1% THD) 12-position switch provides from +7dB to +65dB of gain for the preamplifier circuit, as measured between the input and output when the OUTPUT control is set fully counterclockwise (0 dB)
• Mic Output Trim: Output potentiometer provides from 0 dB (unity gain) to +20 dB of gain
• High Pass Filter Frequencies: 3-position on-off-on switch provides switchable first order passive high pass filter (-6 dB per octave) with cutoff frequencies (-3 dB) at 115 Hz and 230 Hz
• XLR Connector Polarity: Pin-1 is ground, pin-2 is high, pin-3 is low
• LED Signal Level Indicators: The green LED snaps on at -20 dBu to indicate the presence of signal; the yellow LED snaps on at 0 dBu; the red LED snaps on at +20 dBu to warn of approaching signal overload, which is 8 dB prior to clipping