176 Tube Limiting Amplifier
176 Tube Limiting Amplifier
Retro Instruments 176 Tube Limiting Amplifier is a mono tube variable-mu compressor/limiter based on the Bill Putnam UA 176.
Specifications
Format
| Product type | Mono tube variable-mu compressor/limiter |
|---|---|
| Channels | 1 |
| Rack format | 2U 19-inch rackmount |
| Power | IEC power connector, 115/230 V AC mains |
Compression
| Compression type | Variable-mu tube design |
|---|---|
| Ratios | 2:1, 4:1, 8:1 and 12:1 |
| Attack release | Continuously variable attack and release time |
| Gain reduction | 20 dB available gain reduction |
| Stereo strapping | Two or more units can be strapped for stereo operation |
Controls and I/O
| Sidechain filter | Wide-range sidechain high-pass filter |
|---|---|
| Vocal asymmetry | Vocal Asymmetry Tool |
| Bypass | Hard-wire bypass and interstage transformer bypass |
| Metering | VU meter switchable between input, output and gain reduction |
| Connectors | XLR input and output |
Performance
| Signal to noise | >76 dB |
|---|---|
| Frequency response | Within 0.5 dB from 20 Hz to 20 kHz |
| Harmonic distortion | Less than 1% from 0-15 dB gain reduction |
Fit and constraints
Intended use
Constraints
To use it
Questions
Which connections, drivers, operating systems, and sample rates are supported by this exact revision?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
What cables, mounts, power supplies, or licenses are included?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Is the current retailer listing new stock, demo stock, open box, or special order?
Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.
Description
Retro Instruments 176 Tube Limiting Amplifier is a mono tube variable-mu compressor/limiter based on the Bill Putnam UA 176. The manufacturer lists an authentic variable-mu tube design, continuously variable attack and release, four compression ratios from 2:1 to 12:1, wide-range sidechain high-pass filter, Vocal Asymmetry Tool, hard-wire bypass, interstage transformer bypass, switchable VU meter for input/output/gain reduction, XLR input and output, IEC power inlet, 115/230 V AC mains, integral tube balance test and stereo strapping of two or more units. Specifications include 20 dB available gain reduction, greater than 76 dB signal-to-noise ratio, frequency response within 0.5 dB from 20 Hz to 20 kHz and less than 1% harmonic distortion from 0 to 15 dB gain reduction. Retailer data confirms a single-channel 2U 19-inch rack chassis. GTIN and exact weight/dimensions were not found.