Audio Database
E-212 image

An integrated amplifier that has been refined to a higher degree of perfection while maintaining the technology and quality of the E-200 series.

The output element employs a multi-emitter type high-power audio power transistor with excellent characteristics such as high-frequency characteristics, current amplification factor linearity, and switching characteristics.
This element is configured with parallel push-pull to achieve low impedance, and is fixed on a heat sink to perform effective heat dissipation processing.

The current feedback type amplification circuit which returns an output signal in the form of current is adopted as a power amplifier part.
This circuit lowers the impedance of the input terminal which is a feedback side, detects current, and carries out I-V conversion of the current with a transformer impedance amplifier, and is making the output signal. Since the impedance of the feedback input part is extremely low, phase rotation hardly occurs and there is almost no need for phase compensation.
As a result, various characteristics can be greatly improved with a small amount of NFB, and a natural energy response with excellent dynamic characteristics such as rising is realized.

The logic relay control system is adopted in order to constitute the shortest straight signal course.
The sealed type relay for communication industry is adopted as the relay used by this system, and low contact resistance and high durability are realized by making a contact a gold-plating and a crossbar twin system.

The addition type active filter system is adopted as a tone control.
In this method, the original flat signal passes straight, another characteristic is made if necessary, and the sound quality is adjusted by adjusting the flat signal.

The speaker terminal of two lines is carried and a speaker change and a bi-wiring connection are possible.

In order to monitor output electric power, the logarithmic compression type analog type peak power meter is carried.

The power supply section is equipped with a large power transformer of about 400VA. In addition, two large capacitors of 22,000μF are mounted on the aluminum electrolytic capacitor for filters.

The insulator made from high carbon cast iron is adopted.

A remote commander that allows volume adjustment and input switching is included.

Equipped with an option board input slot, it is possible to add digital input or analog disk input.

Model rating
Model Integrated stereo amplifier
Rated continuous average output
(Both channel operation, 20Hz-20kHz)
115W/ch (4Ω)
105W/ch (6Ω)
Total harmonic distortion (both channel operation) 0.04% (4Ω to 16Ω load)
IM distortion rate 0.01%
Frequency characteristics High Level input:20Hz~20kHz +0 -0.2dB (at rated continuous average output)
Damping factor 100 (8Ω load, 50Hz)
Input sensitivity/impedance
(rated output/EIA 1W output)
High Level input:213mV/22.5mV/20kΩ
Balanced input: 213mV/22.5mV/40kΩ
Gain High Level input → output:42dB
S/N, input conversion noise
Input short-circuit/A-correction EIA S/N
S/N at rated output Input conversion noise
High Level input: 110dB -129dBV 81dB
Balanced input: 92dB -111dBV 81dB
Tone control Bass (300Hz): ±10dB (50Hz)
High tone (3kHz): ±10dB (20kHz)
Loudness compensator +6dB (200Hz, Volume -30dB)
Power meter Logarithmic compression type peak level display
Direct reading of output with dB scale and 8Ω load
Load impedance 4Ω~16Ω
headphone jack Compatible impedance:8Ω-100Ω
power supply AC100V, 50Hz/60Hz
Power consumption 30W (without input)
220W (Electrical Appliance and Material Control Law)
336W (at 8Ω load rated output)
Maximum external dimensions Width 475x height 150x depth of 422mm
weight 18.9kg
Included Remote Commander RC-23
AC power cord
Sold separately: Option board
No image Line input board Line-9 (6,000yen)
Unbalanced general high level input terminal.
Plays analog signals such as CD players and tuners.
No image Analog disk input board AD-9(30,000yen)
Equipped with a high gain equalizer, it is compatible with all cartridges.
MM/MC switching, MC input impedance, and subsonic filter on/off can be set by the internal dip switch.

MM Gain: 36dB
Input impedance: 47kΩ
MC Gain: 62dB
Input impedance: 10, 30, 100Ω switching
Line-10 image Line input board Line-10 (8,000 yen)
A general high-level input terminal of unbalanced type.
Plays analog signals such as CD players and tuners.
AD-10 image Analog disk input board AD-10 (50,000 yen)
Equipped with a high-performance high-gain equalizer, it supports all cartridges.
MM/MC switching, MC input impedance, and subsonic filter on/off can be set by the internal dip switch.

MM Gain: 29dB
Input impedance: 47kΩ
MC Gain: 60dB
Input impedance: 10, 30, 100Ω switching
No image Digital input board DAC-10 (50,000 yen)
Equipped with MDS (Multiple ⊿Σ) system D/A converter and coaxial/optical input terminal.
It supports digital music signals (sampling frequency 32kHz to 96kHz/24bit).
DAC-10 cannot be used for E-407, E-406V, E-306V, E-211 and C-265.