>Click here Here is the review from Head-Fi.org
In these days, various music devices such as portable audio players have diversified the ways to enjoy music; nevertheless, the richness in daily life that we can feel from the sound produced from vacuum tube amplifiers is now being re-evaluated.
TU-882R(kit)/TU-882AS (pcb assembled ) vacuum tube stereo headphone amplifier was developed for the enjoyment of the vacuum tube sound from a digital sound source without being interference of the surrounding environment.
The mechanical specification is as rich as the sound it produces. A number of input/output terminals are available; 3 levels of headphone output terminals (LOW, MIDDLE, and HIGH) that allow you to use any commercially available headphones, and an input priority terminal at the front panel, and on the back side, a loop-through output terminal that outputs the input signals as they are.
The coupling capacitor uses a non-inductive PP film capacitor which has excellent electric characteristics in non-inductive construction.
The cathode bypass capacitor uses an OS-CON (organic semiconductor capacitor). In addition, the power transformer has a magnetic flux leakage reducing configuration alongside the shield panel which is installed in a special way so that the influence to other surrounding parts and components is minimized to produce the best quality sound.
With all these features, we hope you enjoy the clear and rich sound of TU-882 Vacuum tube stereo headphone amplifier.
Some of the superior features of the OS-CON type capacitor:
Very low ESR
ESR is stable over a wide temperature range
Wide temperature range -55 degrees C to 105 degrees C
Wide frequency range
High ripple current capability
TU-882AS (120V) $445.00 (PCB assembled)
TU-882AS (230V) $455.00
Vacuum tube / 5670W×2
Rated output / 200mW(RL＝6Ω or 32Ω or 600Ω)
Output impedance / LOW 4～20Ω、MID 20～100Ω、HIGH 100～1kΩ
Rate input / 400mV
Input resistance / 50kΩ
Frequency response / 20Hz～50kHz
S/N 102dB(IEC WEIGHTING)
Voltage / AC120V 50/60Hz (230V version add $40.00)
Dimension / W130×H120×D250mm
Power consumption / 10W
Weight / 2.4kg
Made in Japan
TU-882AS Stereo Vacuum Tube 5670(W) X 2 Headphone Amplifier
Everyone can enjoy assembling this PCB assembled kit with ease soldering is not required!
TU-882AS - Step by Step Assembly Guide
- Long nose pliers
- Screw driver ( No.2)
You will find it unnecessary to solder this TU882AS kit. It's a PCB assembled kit.
Connect one side of the jumper cable to the main board (PCB-A connector),
With the one side still connected to the main board (PCB-A), horizontally connect the other side of the jumper cable to the inside of the Headphone Jack plug (PCB-C connector).
Install a hex-head spacer to the main chassis.
Install the main board (PCB-A) to the main chassis
Now place the power supply unit (PCB-D) on the outside top part of the chassis. Attach the four connectors from the main board (PCB-A) to the power supply unit (PCB-D).
Place the transformer cover on top of the power supply unit.
Install the four insulators to the bottom of the chassis.
Install the front panel and volume knob.
Insert the vacuum tube 5670(W) into the socket.
Install the protector for the vacuum tube.
You are now complete.
Now, plug your favorite headphones into the amplifier and enjoy the excellent sound produced by the vacuum tube amplifier.