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Description
The Universal Audio 4-710d is a boutique quality, four-channel microphone/line preamplifier with unique tube and solid-state tone blending capabilities - perfect for a wide range of microphone and instrument sources. This versatile multi-channel preamp offers selectable 1176-style compression cir... Read MoreRetail Price: $2,499.00 Our Price: $1,999.00
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Description
The Universal Audio 4-710d is a boutique quality, four-channel microphone/line preamplifier with unique tube and solid-state tone blending capabilities - perfect for a wide range of microphone and instrument sources. This versatile multi-channel preamp offers selectable 1176-style compression circuitry on each channel, plus four additional line inputs feeding eight channels of pristine analog-to-digital conversion. Building upon UA's classic analog design approach, combined with smart modern features, the 4-710d is the most flexible preamp in the UA lineup.
At the core of the 4-710d are four channels of tone-blending "Twin-Finity" mic preamps with true-bypass 1176-style compression, including specially tuned fast and slow settings. Each of the four mic preamp channels allows for continuously variable phase-aligned tone, between a 100% tube and 100% solid-state signal path. Send and return jacks are available for external processing or signal access.
Features:
Preamplifiers
Analog-to-Digital Conversion
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Product Specs
Analog Section, Channels 1-4 | |
MICROPHONE PREAMPLIFIER TO LINE OUT | |
Gain Range | 56 dB |
Min Gain | 14 dB |
Max Gain | 70 dB |
Max Input Level (bal) | 6.7 dBu |
Max Output Level (bal) | 20 dBu |
Max Output Level (unbal) | 14 dBu |
Input Impedance (bal) | 2 k? |
Input Impedance (Hi-Z) | 2.2M? |
Output Impedance (bal) | 600 ? |
Output Impedance (unbal) | 300 ? |
Equiv. Input Noise (150?, 56 dB gain) | -127 dBu |
Frequency Response (20Hz-20kHz) | +0.1/-0.15 dB |
Phase (Mic In to Line Out, 20 kHz) | < 0.5 deg |
Stereo Phase Mismatch | < 0.6 deg |
Stereo Level Balance (1 kHz) | < 0.01 dB |
Crosstalk (max gain, 1kHz) | < -115 dB |
Common Mode Rejection Ratio (max gain, 60 Hz) | > 62 dB |
LINE IN TO LINE OUT | |
Gain Range | 56 dB |
Min Gain | -7 dB |
Max Gain | 49 dB |
Max Input Level (bal) | 26 dBu |
Max Input Level (unbal) | 20 dBu |
Max Output Level (bal) | 20 dBu |
Input Impedance (bal) | 10 k? |
Input Impedance (unbal) | 5 k? |
Output Impedance (bal) | 600 ? |
Output Impedance (unbal) | 300 ? |
Frequency Response (20Hz-20kHz) | +0.1 / -0.15 dB |
Phase (Line In to Line Out, 20 kHz) | < 0.5 deg |
Stereo Phase Mismatch | < 0.5 deg |
Stereo Level Balance (1 kHz) | < 0.2 dB |
Crosstalk (max gain, 1kHz) | < -115 dB |
Common Mode Rejection Ratio (max gain, 60 Hz) | > 70 db |
Tube @ 100% – LINE IN TO LINE OUT | |
Tube Complement | 12AX7 (2) |
THD+N (19 dBu, 1 kHz, 20 kHz BW) | -30 dB (3.1%) |
THD+N (17 dBu, 1 kHz, 20 kHz BW) | -20 dB (1.0%) |
SNR (min gain, 1 kHz, A-wgt, 20 kHz BW) | 109 dB |
SNR (max gain, 1 kHz, A-wgt, 20 kHz BW) | 74 dB |
Solid State @ 100% – LINE IN TO LINE OUT | |
THD+N (min gain, 1 kHz, 20 kHz BW) | -101 dB (0.0009%) |
THD+N (max gain, 1 kHz, 20 kHz BW) | -70 dB (0.03%) |
SNR (min gain, 1 kHz, A-wgt, 20 kHz BW) | 110 dB |
SNR (max gain, 1 kHz, A-wgt, 20 kHz BW) | 82 dB |
Low Cut Filter | Type Bessel 2nd Order Corner Frequency 75 Hz Attenuation (20 Hz) -23 dB |
Pad | Attenuation 15 dB |
Phase | Phase Shift 180 deg |
Phantom Power | Phantom Power Current (per jack) 10 mA Voltage 48V ± 1V |
Compressor | Threshold 10 dBu Compression Ratio 4:1 Fast Attack Time 0.3 ms Fast Release Time 100 ms Slow Attack Time 2.0 ms Slow Release Time 1100 ms |
Limiter | Threshold 17 dBu (= -3 dBFS) Attack Time 0.075 ms Release Time 100 ms |
Send/Return | Send Level, Max (bal) 20 dBu Return Level, Max (bal) 20 dBu Send Level, Max (unbal) 14 dBu Return Level, Max (unbal) 20 dBu |
Analog Meter | Switch, GR Comp. Gain Reduction Switch, Drive Tube Stage Drive Switch, Level Output Level Level, 0 dB VU, Drive Mode 12 dBu Level, 0 dB VU, Output Mode 4 dBu |
Analog-To-Digital Converter Section | |
Note | All specifications are typical performance unless otherwise noted. Unless otherwise noted, all specifications are 20 Hz-20 kHz, minimum gain, maximum level, 24 bits, all switches in neutral or off mode, 100% solid state, -1 dBFS output. |
Microphone Input | |
THD+N (-1 dBFS) | -100 dB (0.001%) |
SNR (A-Wt) | 110 dB |
Dynamic Range (-60 dBFS, A-wt) | 110 dB |
Frequency Response | +0.1/-0.15 dB |
Stereo Phase | < 0.3 deg |
Line Input (Ch 1-4) | |
THD+N (-1 dBFS) | -100 dB (0.001%) |
SNR (A-Wt) | 110 dB |
Dynamic Range (-60 dBFS, A-Wt) | 110 dB |
Frequency Response | +0.1/-0.15 dB |
Stereo Phase | < 0.3 deg |
Line Input (Ch 5-8) | |
THD+N (-1 dBFS) | -103 dB (0.0007%) |
SNR (A-Wt) | 117 dB |
Dynamic Range (-60 dBFS, A-Wt) | 117 dB |
Frequency Response | ±0.1 dB |
Stereo Phase | < 0.5 deg |
16-Bit Mode | |
Dither Type | Triangular |
Sample Resolution | 16 bits |
THD+N (-1 dBFS, 16 bits) | -93 dB (0.0022%) |
SNR (A-Wt) | 98 dB |
Dynamic Range (-60 dBFS, A-Wt) | 98 dB |
Digital Output Section | |
Digital Output Formats | AES/EBU 8 channels, 44.1-192kHz, single wire ADAT Optical 44.1-48kHz: Port 1 = channel 1-8 Port 2 = channel 1-8 (duplicate out) 88.2-96Khz (S/MUX™): Port 1 = channel 1-4 Port 2 = channel 5-8 176.4-192kHz (S/MUX™): Port 1 = channel 1-2 Port 2 = channel 3-4 |
Bit Depths | 24-Bit 16-Bit (dithered) |
Clock Options | Internal (crystal) 44.1, 48, 88.2, 96, 176.4, 192 kHz Word Clock 44.1, 48, 88.2, 96, 176.4, 192 kHz Lock range ±3% Optional termination (75 ohms) |
A/D Metering | Bottom segment: Green, -37 dB to -6 dB Top segment: Yellow, -6 dB to -1 dB Top segment: Red, -1 dB to Clip |
Connector Types | |
External Connections (rear panel) | 8 x XLR Female Line in, Mic in (channel 1-4) 4 x XLR Male Line out (channel 1-4) 12 x ¼” TRS Female (ch 1-4 send, return, line in 5-8) 2 x Toslink out (ADAT Optical output 1-8) 2 x BNC 75? (Word Clock in, out) 1 x DB-25 (AES/EBU Tascam pin-out, ch 1-8) |
External Connections (front panel) | 4 x ¼” TRS Female (channel 1-4 Hi-Z in) |
Mechanical and Power | |
AC Requirements | 100VAC - 240VAC, 50/60 Hz, auto-switching |
Maximum Power Consumption | 0.525 A @ 120 VAC (60W) |
Power Connector | Detachable IEC power cable |
Dimensions | 2U Rack 19” x 3.5” x 12” (W x H x D) inches 48.2 x 8.9 x 30.5 (W x H x D) cm |
Weight | 11.5 lbs (5.2 kg) |
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