The ST-PA2 features a single, unbalanced audio input, a gain control, and two outputs. The first output is designed to deliver a clean 2 watts RMS into an 8 Ω speaker. The second output is intended to drive 600 Ω transformers, typically on equipment inputs. This makes the ST-PA2 uniquely suited to applications such as music-on-hold inputs on telephone systems which may have either 8 Ω or 600 Ω inputs. If desired, both outputs may be used at the same time.
| Input | Unbalanced 10 kΩ |
|---|---|
| Input Level | ‑15 dBV minimum (for rated power output)‑20 dBV minimum (for 1 watt RMS into 8 Ω |
| Frequency Response | 35 Hz to 30 kHz (8 Ω +/‑ 1.5 dB)20 Hz to 30 kHz (600 Ω +/‑ 0.5 dB |
| THD+N | < 0.75%; 0.5% typical |
| Noise | < ‑80 dB (8 Ω @ 2 W RMS)< ‑70 dB (600 Ω, referred to +4 dBu) |
| Outputs (2) | 1 @ 8 Ω, 2 watts RMS maximum1 @ 600 Ω, +12 dBu maximum |
| Ambient Operating Environment | 0° C to 40° C |
| Power Requirement | Ground‑Referenced, 24 to 33 Vdc @ 250 mA |
| WEEE Weight | 0.13 lbs (0.059 kg) |
| Shipping Dimensions | 2" (50.8 mm) x 2" (50.8 mm) x 4" (101.6 mm) |
| Shipping Weight | 0.18 lbs (0.082 kg) |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
