BOULDER 500
¥ 1,120,000 (around the early 1990 s)
Commentary
This is the first stereo power amplifier released by Bolder for consumer use.
Equipped with left and right independent input level control.
Two types of input terminals are used : balanced and unbalanced.
Equipped with an indicator that can visually confirm the operation of protectors.
It can be used as a high-power monaural power amplifier by bridge connection.
Model Rating
| Type | Stereo power amplifier |
| Effective power | 500W (8 ohm, mono) 250W + 250W (4 Ω) 150W + 150W (8 Ω) |
| Maximum power output | 600W (8 ohm, mono) 300W + 300W (4 Ω) 600W + 600W (8 Ω) |
| Instantaneous maximum current | 50A |
| Gain | 26dB |
| Input impedance | Balance : 10k Ω Unbalanced : 33.5k Ω |
| External dimensions | Width 435x Height 187x Depth 417 mm |
| Weight | 25kg |