A&D DA-A9500
¥ 800,000 (sold on November 21, 1988)
Commentary
A power amplifier with an 18-bit linear 0 cross D/A converter installed in the core of the system.
The digital signal is converted into analog just before the power stage, and equipped with a high-precision digital filter, D/A converter and volume adjustment mechanism.
In particular, the D/A converter has a push-pull configuration in which L/R and plus / minus are independent, realizing an 18-bit system, reducing 0 cross distortion and improving linearity and SN ratio.
The power stage supplies linear current to the speakers and is equipped with a linear current drive circuit that is equivalent to 10 times the power supply.
Basic operations such as volume adjustment can be performed with the attached remote control, and it can also be used as a stand-alone pre-main amplifier.
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Model Rating
| Type | Digital power amplifier |
| Rated Output (20 Hz ~ 20 kHz) | 200W + 200W (8 Ω) 240W + 240W (6 Ω) 320W + 320W (4 Ω) |
| Frequency characteristic | 2 Hz to 100 kHz, 1.5 dB |
| Total harmonic distortion factor | 0.002% (8 Ω, 1 kHz) |
| S/N ratio (IHF-A corrected) | 120dB |
| Input terminal | Analog : 2 systems Digital : 2 systems (coaxial / optical switching) |
| Input level adjustment | Continuously variable |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 480W |
| External dimensions | Width 466x Height 215x Depth 468 mm |
| Weight | 34.5kg |
| Attachment | Remote control |