USA
Catalog   /   Sound & Hi-Fi   /   Hi-Fi & Hi-End Components   /   Amplifiers

Comparison Accuphase E-600 vs Accuphase E-470

Add to comparison
Accuphase E-600
Accuphase E-470
Accuphase E-600Accuphase E-470
from $12,276.00
Outdated Product
from $8,907.00 up to $10,556.00
Outdated Product
TOP sellers
Device typeintegrated amplifierintegrated amplifier
Element basetransistortransistor
Toroidal transformer
Capacitor capacitance66 mF80 mF
Amplifier parameters
Number of channels22
Frequency range
20 – 20000 Hz /- 0.2 дБ/
20 – 20000 Hz /- 0.5 дБ/
Power per channel (8Ω)30 W180 W
Power per channel (4Ω)60 W260 W
Power per channel (2Ω)120 W
Signal to noise ratio94 dB102 dB
Signal-to-noise ratio (Main)117 dB125 dB
Damping factor500500
Harmonic distortion0.05 %0.05 %
Channel sensitivity / impedance
Balanced XLR input
78 mV
40 kOhm
190 mV
40 kOhm
Line input
77.7 mV
20 kOhm
190 mV
20 kOhm
Main input
0.61 V
20 kOhm
1.51 V
20 kOhm
Preout
617 mV
0.05 kOhm
1510 mV
0.05 kOhm
Connectors
To amplifier (Main)RCA/XLRRCA/XLR
RCA6 pairs6 pairs
XLR (balanced)4 шт4 шт
Outputs
Pre-Amp
Pre-Amp
For acoustics4 шт4 шт
REC (to recorder)1 pairs1 pairs
XLR (balanced)2 шт2 шт
On headphones6.35 mm (Jack)6.35 mm (Jack)
Front panel
display
indicators
dial indicators
controls behind hidden panel
headphone output
display
indicators
dial indicators
controls behind hidden panel
headphone output
Features
Adjustments
bass control
treble adjustment
balance adjustment
level adjustment
loudness
bass control
treble adjustment
balance adjustment
level adjustment
loudness
More features
By-pass/Direct
additional speaker connect
Bi-Wiring
By-pass/Direct
additional speaker connect
Bi-Wiring
General
Remote control
PSUinternalinternal
Power consumption260 W611 W
Dimensions (WxDxH)465x428x191 mm465x428x181 mm
Weight24.7 kg24.5 kg
Color
Added to E-Catalogdecember 2015december 2015

Capacitor capacitance

The total capacitance of the capacitors installed in the power supply of the amplifier. Usually, for ordinary lovers of high-quality sound, this indicator is not practically significant: the capacitance is selected in such a way as to optimally (or at least minimally) match the characteristics of the amplifier. However, for demanding audiophiles who pay attention to the smallest details of audio system components, capacitors are also often of interest.

The fact is that they are an important part of the rectifier circuit — they smooth out current fluctuations that arise both due to the imperfection of the rectifiers themselves and due to various external factors. Knowing the total capacitance of the capacitors, one can also evaluate the efficiency of their work: the higher this indicator, the more stable the power supply will work and the lower the likelihood of sound distortion due to its fault. There are special formulas that allow you to derive the optimal capacitance of capacitors depending on the type, power and other parameters of the amplifier; they can be found in specialized sources.

Power per channel (8Ω)

The nominal sound power output by the amplifier per channel when operating with a load having a dynamic resistance (impedance) of 8 ohms. In our catalog, this parameter is indicated for the mode when all channels of the amplifier work under load (see "Number of channels"); in the presence of unused channels, the rated power may be slightly higher, but this mode cannot be called standard.

Rated power can be simply described as the highest output signal power at which the amplifier is able to work stably for a long time (at least an hour) without negative consequences. These are average figures, because in fact, the audio signal is by definition unstable, and individual level jumps can significantly exceed the rated power. However, it is she who is the main basis for assessing the overall loudness of the sound.

This indicator also determines which speakers can be connected to the amplifier: their rated power should not be lower than that of the amplifier.

According to the laws of electrodynamics, with different dynamic load resistance, the output power of the amplifier will also be different. In modern speakers, the standard values \u200b\u200bare 8, 6, 4 and 2 Ohms, and power levels are indicated for them.

Power per channel (4Ω)

The nominal sound power output by the amplifier per channel when a load with a dynamic resistance (impedance) of 4 ohms is connected to it. See Power per Channel (8Ω) for more information on power rating and its relationship to impedance.

Power per channel (2Ω)

The nominal sound power output by the amplifier per channel when a load with a dynamic resistance (impedance) of 2 ohms is connected to it. See Power per Channel (8Ω) for more information on power rating and its relationship to impedance.

Signal to noise ratio

In itself, the signal-to-noise ratio is the ratio of the level of pure sound produced by the amplifier to the level of extraneous noise that occurs during its operation. This parameter is the main indicator of the overall sound quality — and very clear, because. its measurement takes into account almost all the noise that affects the sound in normal operating conditions. A level of 70 – 80 dB in modern amplifiers can be considered acceptable, 80 – 90 dB is not bad, and for advanced audiophile-class devices, a signal-to-noise ratio of at least 100 dB is considered mandatory.

If the specifications do not specify for which output the signal-to-noise ratio is indicated, it usually means its value for the linear input (see "RCA (par)"). This is quite enough to evaluate the quality of the device for this parameter. However, some manufacturers indicate it for other inputs — Main, Phono; see below for more on this.

Signal-to-noise ratio (Main)

Signal-to-noise ratio when the amplifier is operating through the Main input. For more details on the value of the signal-to-noise ratio, see the relevant paragraph above, about the Main input — p. "Input to the amplifier (Main)".

Balanced XLR input

The sensitivity and dynamic impedance of the amplifier when a signal is applied to the balanced XLR input.

Under the sensitivity of any input (except optical) is meant the lowest signal voltage at this input, at which the amplifier is able to provide normal nominal power values (see "Power per channel (8Ω)"). This parameter determines, first of all, the requirements for the signal source. On the one hand, the voltage provided by this source must not be lower than the input sensitivity of the amplifier, otherwise the latter simply will not give the claimed characteristics. However, a significant excess in voltage should not be allowed, otherwise the sound will begin to be distorted. More detailed recommendations on choosing an amplifier by sensitivity are described in special sources.

For any input other than optical, it is believed that the higher this indicator, the less distortion the amplifier introduces into the signal. The minimum level of input impedance in modern models is considered to be 10 kOhm, and in high-end devices it can reach several hundred kOhm.

Line input

The sensitivity and dynamic impedance of the amplifier when a signal is applied to the RCA line input.

Under the sensitivity of any input (except optical) is meant the lowest signal voltage at this input, at which the amplifier is able to provide normal nominal power values (see "Power per channel (8Ω)"). This parameter determines, first of all, the requirements for the signal source. On the one hand, the voltage provided by this source must not be lower than the input sensitivity of the amplifier, otherwise the latter simply will not give the claimed characteristics. However, a significant excess in voltage should not be allowed, otherwise the sound will begin to be distorted. More detailed recommendations on choosing an amplifier by sensitivity are described in special sources.

For any input other than optical, it is believed that the higher this indicator, the less distortion the amplifier introduces into the signal. The minimum level of input impedance in modern models is considered to be 10 kOhm, and in high-end devices it can reach several hundred kOhm.

Main input

The sensitivity and dynamic impedance of the amplifier when a signal is applied to the Main input.

Under the sensitivity of any input (except optical) is meant the lowest signal voltage at this input, at which the amplifier is able to provide normal nominal power values (see "Power per channel (8Ω)"). This parameter determines, first of all, the requirements for the signal source. On the one hand, the voltage provided by this source must not be lower than the input sensitivity of the amplifier, otherwise the latter simply will not give the claimed characteristics. However, a significant excess in voltage should not be allowed, otherwise the sound will begin to be distorted. More detailed recommendations on choosing an amplifier by sensitivity are described in special sources.

For any input other than optical, it is believed that the higher this indicator, the less distortion the amplifier introduces into the signal. The minimum level of input impedance in modern models is considered to be 10 kOhm, and in high-end devices it can reach several hundred kOhm.
Accuphase E-470 often compared