COLUMBIA POA-200
¥ 24,800 (around 1971?)
Commentary
A stereo power amplifier with an independent power amplifier section of the PMA 300.
The circuit configuration employs an OCL circuit that connects all the circuits directly and drives the speakers directly without passing through a capacitor.
In order to improve the reliability and stability of this direct circuit, we have adopted a monolithic IC that is stable against temperature and voltage fluctuations and introduced a differential amplifier circuit.
Model Rating
| Type | Stereo power amplifier |
| Circuit configuration | Differential-amplified fully connected pure complimentary service Two power supply OCL circuit |
| Rated output | Single-channel Operation : 22W/22W (8 Ω, 0.1% distortion factor) Both channels operating : 18W + 18W (8 Ω, distortion factor 0.1%) 21W + 21W (8 ohm, EIAJ, 5%) |
| Distortion factor | 0.03% or Less (Output 18W or Less) |
| Cross modulation distortion factor | 0.1% or less (output 18W, 60 Hz : 7 kHz = 4 : 1, SMPTE) |
| Frequency characteristic | 8 Hz to 90 kHz |
| Input sensitivity | 1 V (at 20W output) |
| Noise output | 0.02 μ W (Input Short) |
| Signal-to-noise ratio | 90 dB or more |
| Speaker impedance | 8 Ω ~ 16 Ω |
| Damping factor | 70 or More (1 Hz ~ 10 kHz) 50 or More (1 Hz to 50 kHz) |
| Semiconductor used | Transistor : 12 Diode : 10 pcs IC : 1 Thermistor : 2 pcs |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 55W (in normal use) |
| External dimensions | Width 185x Height 141x Depth 341 mm |
| Weight | 5.3kg |
| Attachment | 1 x connection code (EP-5796) |