ASA 204 – Quad Active Audio Summing Amplifier with RCA Inputs
Key Features
- Converts stereo audio to balanced or unbalanced mono audio
- Stereo inputs on RCA connectors, mono output on captive screw connectors
- ±6 dB output gain switch
- Rack-mountable 1U, quarter rack width metal enclosure
| Audio | |||
|---|---|---|---|
| Gain | Generally unity. Actual gain depends on whether or not both inputs have signals and also on the output wiring and DIP switch settings. See the table below. | ||
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| Frequency response | 20 Hz to 20 kHz, ±0.05 dB | ||
| THD + Noise | 0.03% @ 1 kHz at nominal level | ||
| S/N | >90 dB (balanced) at rated maximum output | ||
| CMRR | >75 dB @ 20 Hz to 20 kHz | ||
| Audio input | |||
| Number/signal type | |||
| ASA 204 | 4 stereo, unbalanced | ||
| ASA 304 | 4 stereo, balanced/unbalanced | ||
| Connectors | |||
| ASA 204 | 4 pairs of female RCA (tip-ring) | ||
| ASA 304 | (4) 3.5 mm captive screw connectors, 5 pole | ||
| Impedance | |||
| ASA 204 | >10k ohms unbalanced, DC coupled | ||
| ASA 304 | >17k ohms unbalanced, 23k ohms balanced, DC coupled | ||
| Nominal level | |||
| ASA 204 | -10 dBV (316 mV) | ||
| ASA 304 | +4 dBu (1.23 V) | ||
| Maximum level | +20 dBu (7.75 V), (balanced or unbalanced), at 1% THD+N | ||
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| Audio output | |||
| Number/signal type | 4 mono, balanced/unbalanced | ||
| Connectors | (2) 3.5 mm captive screw connectors, 5 pole (double stacked) | ||
| Impedance | <50 ohms unbalanced, 100 ohms balanced | ||
| Nominal level | |||
| ASA 204 | -10 dBV (316 mV) | ||
| ASA 304 | +4 dBu (1.23 V) | ||
| Maximum level (Hi-Z) | |||
| ASA 204, ASA 304 only | >+23 dBu, balanced; or >+17 dBu, unbalanced at 1% THD+N | ||
| General | |||
| Power supply | External Input: 100-240 VAC, 50-60 Hz Output: 12 VDC, 0.5 A, 6 watts | ||
| Power input requirements | 12 VDC, 0.2 A | ||
| Ambient temperature/humidity | Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing | ||
| Cooling | Convection, no vents | ||
| Mounting | |||
| Rack mount | Yes, with optional 1U rack shelf | ||
| Furniture mount | Yes, with optional mini under desk mounting kit | ||
| Pole mount | Yes, with optional mini projector mounting kit | ||
| Enclosure type | Metal | ||
| Enclosure dimensions | 1.7″ H x 4.3″ W x 3.0″ D (1U high, quarter rack wide) (4.3 cm H x 10.9 cm W x 7.6 cm D) (Depth excludes connectors.) | ||
| Product weight | 0.5 lbs (0.3 kg) | ||
| Regulatory compliance | CE, C-tick, c-UL, UL, FCC Class A, ICES, VCCI | ||
| Product warranty | 3 years parts and labor | ||
| Everlast power supply warranty | 7 years parts and labor | ||
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