Dual Vacuum Tube Preamp 386

Mic Preamp Connector Female XLR Pin 2 Hot; Electronically balanced/unbalanced
Mic Preamp Input Impedance 330Ω
Mic Preamp max input level -9 dBu or +11 dBu with 20 dB pad engaged
CMRR >40dB, Typically 55dB
Mic Preamp Equivalent Input Noise (EIN) Typically -120 dBu with a 150Ω source load, 20Hz to 20kHz BW
Input Connectors (instrument/line) 1/4" Jack
Input Type (line) Electronically balanced/unbalanced; (instrument) Unbalanced
Max Input (instrument/line) +21dBu balanced or unbalanced
Gain Adjustment Range (drive control) Line/Instrument: -15dB to +15dB; Mic: +30dB to +60dB
Output Connectors Male XLR Pin 2 Hot and TRS 1/4"
Output Type Servo-balanced/unbalanced
Output Impedance Balanced 120Ω, unbalanced 60Ω
Max Output >+21 dBu, >+20 dBm (into a 600Ω load)
Digital Output Connector XLR for AES/EBU, RCA for S/PDIF
Digital Output Impedance 110Ω for AES/EBU, 75Ω for S/PDIF
Word Sync I/O Connectors BNC
Word Sync Input Impedance 75Ω terminated by internal jumper
Word Sync Input 96, 88.2, 48, or 44.1kHz word clock
Word Sync Output 96, 88.2, 48, or 44.1kHz word clock
Output Level -15dB to +15dB
Line Switch Selects between microphone and line inputs
Mic Preamp Phantom Power +48V
Pad Switch 20dB pad
Phase Invert Switch Reverses pins 2 and 3 of the microphone input XLR
Low cut Switch 75Hz, 12dB/octave high pass filter
Frequency Response (analog) <10Hz to 75kHz
THD+Noise 0.35% typical at +4dBu out, 1kHz, 40 dB gain
Interchannel Crosstalk Typically –80dB, 20Hz to 20kHz
A/D Converter dbx® Type IV® A/D Conversion System
Sample Rate 96, 88.2, 48, or 44.1kHz selectable
Wordlength 24, 20, or 16 bit selectable
Dither Type TPDF, SNR2, or none
Noise Shape Shape 1, Shape 2, or none
Digital Output S/PDIF or AES/EBU
Digital Output Dynamic Range 107dB typical, A-weighted, 22kHz bandwidth
Operating Voltage DO: 120VAC 60Hz, 100VAC 50/60Hz; EU: 230VAC 50/60Hz
Power Consumption 35W
Reference 0dBu = -16dFS, 0dBu-0.775Vms

Here you find 26 models, 25 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from dbx Inc.; Waltham (MA)