Phono Preamplifier, Accuphase C 27

Much time is settled with the development of a fully fledged Phonostage, C 27 (8000 euro) Accuphase. This represents the tip of what is feasible in noise and facilities.

  1. Phono preamplifier, Accuphase C 27
  2. Data sheet

The name Accuphase, thought not necessarily analog record playback, but rather potent amplifier and fine CD player. However, the Japanese in the past have offered even MC cartridge (AC 1, 2 AC, AC 3), MC-pre-Pres (C 7, C 17) and of course installation Phonoplates (AD 9, AD 10, AD 20). The new C 27 for whopping 8000 euro is but the first external phono stage, and it is obvious that Accuphase wants to set standards so in the operation as well as the sound.

Therefore, the engineers at Yokohama have chosen strictly to separate not only the channels, but to create its own switching for MM and MC. The high-impedance inputs necessary for MM realized it with FETs for predestined in diminishing noise, parallel triple differential circuit and following six-run push-pull differential amplifiers. (Need the low input impedance) a push-pull Amplifier powered MCs with bipolar transistors even eightfold copies, resulting in the C 27 to sensationally low noise. The RIAA equalization is actively running in two modes of operation, since it is located in the feedback of the class-A output stages.

The Accuphase represents paradise for Phonofreunde Ausstattungs – and service-side. Three drives, each equipped with any pickup, can connect and switch on the front panel. It is a microprocessor remembers all the parameters that you have chosen for the respective input. What is tremendously useful, because you can choose – when two also in two versions of backup – not only between MM and MC-operation, but naauch between input resistors. So, 3, 10, 30, 100, 300, and 1000 ohm can be with the rotary switch on the front of MC or MM 1, 47 and 100 kOhm set.

In the listening room, the C of 27 in the pure MM operation convinced us the stereoplay highlight reson Reca (2/06) in the reference turntable Linn LP 12 SE radical (6/09) was adjusted and the first notes sounded. Because the C 27 coaxed him so natural and harmonic sounds as she had heard the test team by any MM phono stage. So she widely represented great Orchestra, gave their own sound instruments and charmed by fine, open height, making violins had not only the typical sound of wood, but also silky resounded.

In the MC passages, the C 27 revealed a slightly different character. With the reference Abbot asters Lyra Titan i (6/06) and Transfiguration of Orpheus (11/06) impressed them with very direct speech. So she asked vehemently the comparison to the reference Naim audio Superline with supercap power supply (10/08). This sound tends to be full. The individual instruments at fanfare of Ciocarlia’s “Asfalt Tango” (“Best of Gypsy Brass”, asphalt Tango of records 2409) came with the Naim restrained, but she kept when all the instruments used, the overview, while subtly blurred the outlines of C 27 and in the knee went easily with tutti attacks.

The Superline gave some more body, male voices making about Bill Callahan (“sometimes I wish we were an eagle” / Drag City 385) sonorer sounded, while the C 27 gave more highlights and about the guitar strings more moved to the fore. Because these differences but took place on an extremely high level, we wanted to not deny the C 27 co reference title, mainly because it is one of the most universal phono stages of the planet.

Accuphase C 27

Manufacturer Accuphase
Price €8000.00
Rating 62.0 points
Test procedure 1.0

Technical data and test results

General
Mass B 46, 5 x H 12, 1 X 40.5 cm
Measured values
N ratio MM 5 mV, 1 kohms 85 dB
MM (standard system) 80 dB
MC (0.5 mV, 20 ohm) 82 dB
Reinforcement MM / MC 40.0 / 70.0 dB
Headroom MM / MC 316 / 30.0 mV
Input impedance, MM 47 kOhm + 65 pF
MC 104 ohm
Output resistance 47 ohm
Power consumption standby 29.0 W
Review
Short conclusion Accuphase has thrown his skills in the Pan and built an extremely universal, low noise and excellent sounding phono stage, which now officiates in stereoplay as co reference for the phono stage C 27.
Sound Absolute Spitzenkl.
Sound points MM / MC
(maximum 70 points)
62 / 62
Measured values
(maximum 10 points)
9
Practice
(maximum 10 points)
10
Valency
(maximum 10 points)
10
Overall rating (max. 120 points) outstanding 91 points
Price / performance Very good
tested in issue: 12 / 09