MACTONE XMA-34
¥ 28,000 (around the mid 1960 s?)
Commentary
Stereo power amplifier using 3-pole tube 6RA8.
By using a 3-pole tube, the third harmonic distortion is reduced, and the second harmonic distortion is reduced by circuit technology.
Equipped with a damping control that can compensate for damping.
Model Rating
| Type | Stereo power amplifier |
| Rated output | 14W+14W |
| Music power | 17W+17W |
| Frequency characteristic | 10 Hz ~ 70 kHz ± 1 dB at 1W |
| Distortion factor | 0.8% or Less (Output 14W/14W) 0.2% or Less (Output 10W/10W) 0.08% or Less (Output 1W/1W) |
| Output characteristic | 15 Hz ~ 30 kHz (Distortion 1%, Rated Output) |
| Input sensitivity | 0.8 V (at rated output) |
| Damping factor | 3 ~ 15 (Variable Type) |
| Signal-to-noise ratio | 75 dB or More (Gain Control Maximum) |
| Residual noise | 1.5 mv (minimum gain control) |
| Attachment | Damping controller 3D input terminal |
| Vacuum tube used | 6RA8 : 4 pieces 12AU7 : 2 Pieces 12AT7 : 1 Piece |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 120VA |
| External dimensions | Width 180x Height 140x Depth 365 mm |
| Weight | 9.5kg |