KRELL KSA-80B
¥ 800,000 (released in 1989)
Commentary
Pure A-class design stereo power amplifier.
Pure A-class circuit is used for the circuit structure.
In addition, the KSA-80 adopts a fully balanced system, which has not been achieved with the KSA-80. Excellent sound quality is obtained by the configuration in which the plus side and minus side of the amplifier circuit are independent.
The output stage adopts 12 parallel push-pull configuration per channel, and excellent low-load driving capability is realized by combining it with a large-capacity power supply.
As a sister unit of the KSA-80B, there was a monaural power amplifier KMA 160 (one set of two, ¥ 1,600,000).
The KMA-80B is connected in parallel with the KSA-80B to increase the supply voltage by 1.4 times, so the display power is not as large as that of the BTL connection. Although the output power is 160W, the BTL connection is robust against low loads. The KMA-80B is connected in parallel with the KSA-80B in the KMA-10B connection. The KMA-10B is connected in parallel with the KSA-80B connection to increase the power supply voltage by times. 160
Model Rating
| Type | Stereo power amplifier |
| Rated output | 80W + 80W (8 Ω) 160W + 160W (4 Ω) 320W + 320W (2 Ω) |
| Input Sensitivity / Impedance | 0.775V/48k Ω |
| Total harmonic distortion factor | 0.03% or Less (20 Hz to 20 kHz, Rated Output) |
| Frequency characteristic | 5 Hz ~ 100 kHz + 0 -1dB (at Rated Output) |
| Signal-to-noise ratio | 100 dB or more |
| Damping factor | 300 or higher |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 400W |
| External dimensions | Width 585x Height 225x Depth 538 mm |
| Weight | 37kg |