Luxman CL-88

 CL-88 VACUUM TUBE CONTROL AMPLIFIER

Simple two-step amplification NF circuit was adopted. In control amplifier CL-88 circuit, the two-step amplification NF type circuit was adopted in an orthodox way. The functional circuit such as tone control, balance volume, etc. was only directly reflected in the simple circuit via no any other medium, and the wiring method, the layout of components are directly reflected in the sound quality and audio specifications. The switching of signal at the golden contact relay sealed in nitrogen gas at the nearby of 4-system line input terminal reflects the consideration about maintaining a high S/N (rate) because of simple circuit. It is the same with power source part. The reason of the adoption of small scale OI type transistor with good sealing feature and little leakage flux lies in that Luxman knows quite well about how big the impact exerted by S/N (rate) on vacuum tube amplifier is. For quickly supplying pure energy, the regulator circuit is omitted.

 High-precision ultimate volume + touch mute Function.

One of the important parts that could decide the sound quality of preamplifier is volume. Luxman has not only dedicated to sound quality for a long time, but also to the precision, operation feeling. And the ultimate volume with a high precision was adopted in CL-88. For improving operation, the touch mute function is built in. By touching the center of the volume knob, one could mute the sound at once.

llumination realized by blue-LED.

For displaying the character of products and for helping owner enjoy a happiest time of performance, below the volume, meter and chassis, the elegant and calm illumination realized by the blue-LED was equipped.

 The special vacuum tube phono amplifier EQ-88 could be connected.

In CL-88 specially designed for the special use of line level, the optional compact, high quality special vacuum tube phono amplifier EQ-88 was prepared for analog lovers. The power could be supplied just by one touch on the Noitorikku -made connector installed on the rear of power source. ( The separate power unit only for driving EQ-88 will be launched recently. Please consult business department of our company for more detailed information.)

 Chassis construction completely pursuing rigidity

The vibration and the resonance from the outside are the formidable enemy for vacuum tube inside it the electrons collide each other in the vacuum glass tube. For CL-88 on the basis of guaranteeing the rigid foundation by adopting the 15mm super-thick aluminum stainless plate for top panel, the constructions suitable for control amplifier and power amplifier are extensively analyzed. The CL-88 has replaced construction from the original box-type case body to the hanging mode with heavy thing installed in the internal side of top panel. Between the chassis and the top panel, the rubber cushion material was inserted, the framework construction for eliminating the tiny vibration by batten with high rigidity was adopted.  The existing box-type part plays a role of beam in this construction, contributing a lot for the strengthening of the horizontal intensity of the case body as a whole. The Piezon composite insulator used at the foot parts of the two models has taken the construction combining the advantages of hardware and software systems by using the stainless brass combined with damping material (piezoelectricity-type sound-proof and absorption material). It could give a solid support to the amplifier case body as well as could eliminate the vibration and resonance.

SPECIFICATIONS CL-88

Input Sensibility/Input Impedance:  100 mV / 90 kΩ

Output/Input Impedance:  1 V / 1 kΩ

Overall Higher Harmonic Distortion Rate:   0.013% (1kHz rated)

Frequency Characteristic;  5 Hz - 100 kHz (+0, -3 dB)

Signal-to-Noise Ratio:  less than 93 db (1kHz 1HF-A)

Input:  4 Coaxial systems

Output:  1 Coaxial system

Accessory Device: Power switch, power indicator, input selector, volume, touch mute, mute indicator,

line phase sensor, signal ground contact, AC inlet

Vacuum Tube Used:  ECC83S / ECC82

Circuit Format:  2-step amplification NF type

Sound Quality Parts: 

Gold plating 4N non-copper oxide single wire,

Tubular type condenser immersed in vitamin Q oil,

Film type block condenser,

Gold-plating tight socket,

Nnitrogen padding relay with gold contact,

High precision ultimate volume,

Shock-proof construction used in 15mm thick aluminum top panel

Power Consumption:  12 W

Dimension (W x H x D):  255 x 95 x 387 mm

Weight:  8.6Kg