Accuphase E-211 (1991–1994)
Dual-mono integrated amplifier with current feedback topology and logic-controlled signal routing
Overview
The Accuphase E-211 is an integrated stereo amplifier manufactured by Accuphase Laboratory, Inc. from 1991 to 1994. It succeeded the E-206 and was replaced by the E-212. The amplifier features a dual-mono design with separate power supplies for each channel and a triple-parallel push-pull output stage using three pairs of output transistors per channel. Signal routing is handled by logic-controlled relays, and the unit includes balanced inputs, two sets of speaker outputs, high-quality tone controls, a subsonic filter, and a supplied remote commander. An optional phono card (MM/MC) can be installed for high-quality analog disc reproduction.
Specifications
| Power Output (8 ohms) | 90 watts per channel |
| Power Output (4 ohms) | 120 watts per channel |
| Output Stage | Triple-parallel push-pull configuration |
| Circuit Topology | Current feedback circuit |
| Signal Routing | Logic-controlled relays |
| Total Harmonic Distortion | 0.02% |
| Frequency Response | 20Hz to 20kHz |
| Signal to Noise Ratio (Phono MM) | 90dB |
| Signal to Noise Ratio (Line) | 110dB |
| Input Sensitivity (Phono MM) | 2.5mV |
| Input Sensitivity (Line) | 150mV |
| Input Sensitivity (Main In) | 1V |
| Output Level (Rec Out) | 150mV |
| Output Level (Pre Out) | 1V |
| Speaker Impedance | 4 to 16 ohms |
| Dimensions (W x H x D) | 465 x 150 x 390 mm |
| Weight | 19.5 kg |
| Power Consumption | 220W |
| Inputs | Phono (MM), CD, Tuner, Line 1, Line 2, Tape 1, Tape 2 |
| Outputs | Rec Out 1, Rec Out 2, Pre Out, Speaker A, Speaker B |
| Tone Controls | Bass, Treble |
| Filter | Subsonic filter |
| Muting | Yes |
| Specification Standard | Measured according to EIA standard RS-490 |
Design
The E-211 uses a dual-mono architecture with independent power supplies for each channel, enhancing channel separation and reducing crosstalk. The power amplifier section employs a triple-parallel push-pull configuration with three pairs of output transistors per channel. A high-precision conductive plastic potentiometer is used for volume control, and the amplifier includes a high-quality phono equalizer for moving magnet cartridges.
Market
Current market listings show prices ranging from €1,550 to $2,500, with units listed at €1,849 and €1,899 by European retailers. Accuphase products are noted to tend to hold their value. The E-211 is described as an excellent integrated amplifier with a "very nice liquid and musical sound," In an A/B comparison with the Musical Fidelity A5.5, it was judged to have a better presentation but less authority and slam.
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