Pairs well with
Phasemation EA 320
Phasemation describes the EA-320 phono stage as …
Having in mind that “analogs too have a lot more to go,” we expanded the numerous product line-ups and phono amplifiers due to non-feedback circuits for lovers of analog discs.
We are pleased to announce the release of the EA-320, a middle-class semiconductor phono amplifier that incorporates the essence of our advanced models, with refined circuitry to further refine the sound quality and functionality.
We adopted a strong housing structure that is composed with a 10mm thick slant aluminum panel for the front, a 1.2mm thick steel plate chassis base, and a 1.2mm thick steel plate cover and this preserves the rigidity.
A heavy weight metal insulator that blocks external vibrations is used for the feet.
Both the semiconductor amplifier and the vacuum tube amplifier are negative feedback amplifiers which are the mainstream of modern amplifiers and they constantly compare the input and output signals and this difference can be amplified with high precision at low cost because it is amplified as an input signal. However, there is a time delay between the input and output signals which cannot be solved theoretically and this generates a TIM distortion and the like and this is a big reason why sound satisfaction cannot be attained from negative feedback amplifiers.
At Phasemation, amplifiers of semiconductors and vacuum tubes are all composed of non-feedback amplifiers. For non-feedback amplifiers, there are no amending operations like the negative feedback amplifiers and therefore high precision/technology of structured parts and circuits are required. As a result, there are no information remains of the sound source (record) but is played fully 100% and in terms of sound quality, it can play the music with excellent inspiration, dynamics, and shadowed (or the like) expressions.
A) A 1% grade metal film resistance with marginal rated capacity and reputed high sound quality parts such as a Micar capacitors using silvered Micar plates for dielectrics are used on the RIAA elements which have high influence on the phono amp’s sound quality (for only selecting STEREO on playback curve)
B) On the signals, ELNA’s SILMIC electrolytic capacitors for sound quality and metal film resistance of a 1% grade are used.
A) The switching noises are few and adopts Rohm’s SiC diodes which have a reputation for high sound quality.
B) We adopted a large-room electrolytic capacitor that is of highest rank in audio grades of metal plated terminals which uses Nichicon’s low resistance electrode foil on the commutating capacitor.
In addition, the decoupling capacitor adopts ELNA’s SILMIC II.
C) Low noise zener diodes are used combined with the adoption of shunt regulators that exclude the feedback circuit and this structures a fast and extremely low noise power circuit.
D) The power transformer uses a transformer of low leakage flux using an R-core.
| Form | V-I/I-V conversion type all-stage symmetric
non-feedback equalizing amplifier |
|
| Input Form | MM | MC |
| Input Sensitivity | 2.5mV | 0.13mV |
| Input Impedance | 47kΩ | 470Ω |
| Gain | 38dB | 64dB |
| Input Conversion S/N Ratio | -120dBV | -140dBV |
| Rated Output Voltage | 200mV (1kHz) | |
| Rear Curve Tolerance | ±0.5dB (20 – 20kHz) | |
| Power Requirement | AC120V 60Hz (U.S.A.)
AC230V 50/60Hz (Europe/Asia) |
|
| Power Consumption | 13W | |
| Dimensions | 286(W) × 93 (H) × 252(D) | |
| Weight | 3.9kg | |
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