207D Two Channel Tube Mic Preamp with Digital Output

Two Channel Reflected Plate Amplifier Tube Preamp for Mics and Instruments

The Model 207D is an RPA tube mic and instrument preamp offers extremely low noise and high gain that meets or exceeds the performance of preamps costing many times more. The Model 207D will reveal the subtlety and power of both vintage and modern microphones. With its S/PDIF digital output and Word Clock connection, the Model 207D offers direct digital connection to your signal chain, with up to 96kHz sampling rates.

The MicLim„ microphone limiter, from our flagship Model 1788A Eight Channel Premium Remote Controlled Mic Preamp, makes the Model 207D virtually impervious to input clipping – the perfect front end for digital recorders and DAWs to record hotter tracks at the highest possible resolution.

The Model 207D captures a sound that is warm, full and true to life. Whether you are recording, mixing front of house or broadcasting, give your microphones a great start with the Aphex Model 207D Tube Mic/Instrument Preamp.

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Frequency Response +0, -0.5dB 30Hz – 30 kHz
EIN -129dBu (input shorted)
Crosstalk(10 Hz – 22kHz) -79 dB or better
(10 Hz-22kHz at -11dBfs) < 0.18%
Tube Type 12AT7 / ECC81 Dual Triode
Connector XLR-3F same
Type Transformerless, NPN active balanced same
Balanced 2k ohms nominal same
Maximum Level 0 dBu +12.5 dBV (+14.8 dBu)
CMRR Greater than 70dB @ 60 Hz same
Nominal Preamp Gain 20 to 65dB minus OUTPUT TRIM loss 8 to 53 dB minus OUTPUT TRIM loss
Connector 1/4″ Phone Jacks same
Type Unalanced JFET amp same
Input Z 1M ohm nominal same
Maximum Level 10V RMS same
Nominal Preamp Gain infinity to 65dB minus OUTPUT TRIM loss infinity to 38dB minus OUTPUT TRIM loss
Connector XLR-3M and 1/4″ TRS Phone Jacks
Type Impedance balanced(may be used unbalanced)
Output Z Balanced XLR: 66 ohms – TRS: 1200 ohms
Output Z Unbalanced XLR: 33 ohms – TRS: 600 ohms
Nominal Level +4 dBu -10dBv (316 mVRMS)
Maximum Level +21dBu Unloaded +6.75 dBV Unloaded
Output Trim 0 to -12 dB same
Connector 1/4″ TRS Phone Jack
Send Tip
Return Ring
Nominal Operating Level -10dBv (316 mVRMS)
Point of Insertion Between front-end and Tube Output Stage
Power requirements 90-250 VAC 50-60 Hz 12W
Dimensions 19″W x 1.75″H x 8.25″ D Â Â 1 Rack U(482.6mm x 44.5mm x 209.6mm)
Depth behind front panel 7.5″(190.5 mm)
Net Weight 6 lbs(2.73 kg)
Shipping Weight 9 lbs(4.1 kg)

All specifications are subject to change without notice.

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