Dynavector PHA100 phono head amplifier - Manual

The Dynavector phono head amplifier PHA-100 is a complete redesign of our original head amplifier the PE-1, using new
circuitry and the most advanced and highest quality IC’s, resistors and capacitors currently available.
The PE-1 was designed more than 15 years ago using an entirely new patented circuit. During the development of the highly
acclaimed XV-1 cartridge, its performance was optimised through the use of
the original PE-1, making it superior to any other cartridge available.To build
on this, we decided to redesign the PE-1 with the specific aim of making it the
most advanced head amplifier available for the new cartridge. The result is
that the performance of the PE-1 has been significantly improved following
intensive design work and after comparing many prototypes using alternative
components. The result is the PHA-100.
Important factors in reproducing music such as the preservation of natural
ambience, a wide dynamic range and harmonic fidelity are easily overlooked
by conventional methods of amplifying the signal of the cartridge’s output
voltage.There is no shortage of expensive head amplifiers and step up transformers for MC cartridges on the market, all of
which have the aim of amplifying the very low output voltage of MC cartridges with the highest fidelity
In the PHA-100 the maximum current is taken from the cartridge by an active electronic circuit. This current is then
converted to a voltage sufficient to drive a conventional preamplifier For the PHA-100, the current sensitivity of the cartridge
is the most important consideration. By using current amplification, the magnetic distortion of MC cartridges is significantly
reduced but the S/N ratio was still a problem when the PHA 100 was designed 15 years ago. Today, thanks to the latest
technology and components, very low noise operational amplifiers are available and the S/N problem of head amplifiers has
been solved.
„ The PHA-100 has an impedance selection switch to provide the correct match for either low or medium
impedance MC cartridges. In this way, users are able to get the best sound from their cartridge.
„ The PHA-100 makes use of a unique patented circuit designed to provide the maximum fidelity from vinyl
sources.
„ Dynavector is proud of its long record of innovation in the hi-fi field. Our DV-DRT XV-1 cartridge, DV-PHA-
100 head amplifier and DV SuperStereo processors are our answer to a digital industry threatening to destroy
much of the great recorded musical heritage of the last century.
Dynavector DV- PHA-100
Instruction Manual
Type :Current maximising phono amplifier
Output voltage :Dependent on the current sensitivity of cartridge
Frequency Response :10 - 50,000Hz, (+0dB -0.5dB)
S/N ratio :over 62 dB(FLAT)
Cartridge impedance :position 1 — impedance 4 - 7 ohms
:position 2— impedance 30 - 40 ohmsOptimum position selectable
Power supply :AC 100volts, 115volts, 230volts, 2VA
Size&Weight :Main unit: 120w x 176D x 45H mm,900g
:Power supply unit: 82w x 132D x 45H mm, 800g
Country of origin :Made in Japan
SPECIAL FEATURES
SPECIFICATIONS