Product Overview

This is an orthodox style pre-main
amplifier composed of full-stage vacuum
tubes. Input stage ECC83, ECC82, output
EL34 push-pull and Lundal output
transformer with UL connection make
31W+31W output power.
Amplifier uses the 22mm thick solid maple
wood frame and 4mm top solid aluminium
plate, thus the body structure is perfectly
rigid and no deflection. The heavyweight
transformer and sensitive vacuum tube
parts are supported by this body to
reproduce the substantial mid-low
frequencies and delicate high frequencies.
This is designed and manufactured
carefully hand crafted so that it can not only
meet the needs of the modern digital high resolution era, but also has sufficient
functions and performance for analog
playback. This can be used for many years to
come as The Tube Amplifier that will remain
unchanged for decades to come.

Feature
As a basic pre-main amplifier, it is equipped
with 4 RCA line inputs and volume as a
standard model. Three types of option are
available, 1: XLR input x1 + RCA x3, 2:MM
phono + 3 RCA, 3: an RCA/XLR input as a
power amplifier. The backside panel can be
replaced according to each option, so you can
choose in advance or change it later.
The resistors parts are Vishay, PRP and
Japanese TAKUMAN, the film capacitors are
WIMA in Germany, and the electrolytic
capacitors are TDK-EPCOS. We pay attention
about the quality and reliability of these parts.
The power transformer and choke
transformer are made in Japan customized
for Aurorasound, the rectifier diode is ROHM
silicon carbide, which is the lowest noise and
high voltage capability up to date. Various
terminals are also carefully selected with
thick wall gold plating. The EL34 has a self bias operation system that is easy to
maintenance, so can be replaced to other
brand EL34h without bias readjustment.

Specifications

Input: Standard : RCA LINE x4,
Option 1 : Phono(MM) x1 、RCA LINEx3
Option 2 : XLR/RCA x1, No volume, no selector SW
Gain, Input sensitivity: 31dB, 440ｍV
Input impedance: 25kΩ
Output: 31W +31W @8ohm
Frequency response: 10Hz – 30kHz, -3dB
THD+N: 0.1% 1kHz 2
SNR: 98dB A-weighted
AC power voltage: Europe/Asia model 240V, 230V, USA model 120V, Power consumption 200W
Size, Weight: W440 x D290 xH228mm without knobs/terminals 、 20kg