This item is usually Drop Shipped from the MFR/Distributor within 7-10 days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable or returnable.
The SP-20A is a stereo power amplifier housed in a half-rack chassis that delivers 20 watt per channel into either 4 ohms or 8 ohms. It is ideal for recording studio applications, where it can be used to drive small reference speakers, or as a headphone driver for the HR-2 headphone remote stations, while doubling as the tape playback amplifier in the tracking room.
The SP-20A may be operated in any of three modes as selected by a rear-panel switch: normal stereo, two channel mono, or single channel (bridged) mono. The latter mode allows a power output of 40 watts provided the load is 8 or more ohms. Output is available through either of two connectors. Standard banana jack binding posts for speakers, or through a male XLR connector. The latter allows the unit to become the headphone driver.
The amplifier has an input level control on the left side of the front panel. A pair of yellow LED's, one for each channel -- light up whenever signal is present. Another pair of red LED's warns of any overload condition present in either channel. The SP-20A is fully protected against thermal overload, and it can withstand a short circuit on any or all outputs for an indefinite time without damage.
| Power Rating |
Stereo @ 4 ohms: 20 watts per channel Stereo @ 8 ohms: 20 watts per channel Bridged @ 8 ohms: 40 watts |
| Damping Factor | 120 at 1kHz |
| Input Sensitivity | -1.9dBu (625 mV) required for full output into 8 ohms |
| Input Impedance | 20k ohm |
| Gain | Not specified by manufacturer |
| Frequency Response | 20Hz to 20kHz, 1 watt output, +0, -1dB |
| Signal-to-Noise Ratio | Not specified by manufacturer |
| Total Harmonic Distortion (THD) | 0.01% THD at full rated power at 1kHz; 0.05% THD 20Hz to 20kHz |
| Input Connections | 1 x XLR female per channel |
| Output Connectors |
Dual banana/binding post terminals 1 x XLR male satelite/remote 1 x Headphone |
| Controls Front Panel |
1 x Rotary input level control 1 x Rotary headphone volume control 1 x Speaker on/off switch |
| Controls (Rear) | Ground lift switch |
| Indicators | 1 x Signal, 1 x Overload LED indicators per channel |
| Camera Resolution | Convection |
| Power Consumption | 130 watts |
| Dimensions | 8 7/16" x 8 1/4" x 1 3/4" |
| Weight | 6 lbs |
| Specialties | Ground lift switch |