Accuphase E-203 Integrated Amplifier (1974)
The Accuphase E-203 came out in 1974 as the follow-up to the E-202. It is a pure Class A amplifier, and it was tuned for better reliability and sound quality than the E-202 had.
Overview
The E-203 wasn't a reinvention of the E-202. Accuphase looked at how the amplifier was used in the real world and fine-tuned every critical circuit. The result was a more consistent amplifier, and it added to the brand's reputation for integrateds that last.
Specifications
| Model | E-203 |
| Year | 1974 |
| Type | Integrated Amplifier |
| Power Output | 70 watts per channel (Class A) |
| THD | < 0.1% |
| Frequency Response | 20Hz - 20kHz (+/- 0.5dB) |
| Input Sensitivity | approximately 150mV |
| Dimensions | 445 x 128 x 370mm (W x H x D) |
| Weight | 18 kg |
| Impedance | 8 ohms |
| Inputs | mm and mc phono inputs |
| Power Supply | 300 W max |
Improvements Over E-202
- Refined PCB layout
- Improved thermal management
- Enhanced power supply regulation
- Updated protection circuits
- Refined phono stage
Design
Inside, the E-203 is dual-mono construction, which keeps the channels separated. Pure Class A operation gives the sound Accuphase fans like. Outside, it has a heavy-duty chassis and the signature champagne-gold finish. It also has a precision stepped attenuator, and the whole unit is heavy.
Collectibility
For collectors, the E-203 is a sweet spot. It has the classic Accuphase sound, described as detailed and musical, and it offers better long-term reliability than its predecessor. Vintage gear can be temperamental, and the E-203 is more usable than most.
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Service Manuals & Schematics
- Manual — archive.org