Audio Database

C-06 α
Commentary

A control amplifier that thoroughly pursues the ideal form of a modern control amplifier.

By adopting an all-stage operational amplifier circuit, more ideal balance operation has been realized. Phase shift in the high-frequency range, which is harmful to balance transmission, has been eliminated, and reproduction power has been raised to a level comparable to that of RCA input.
In addition, the coaxial input has been upgraded.

The volume part uses an Ultimate attenuator.
This large-sized attenuator is a 4-row 32-point fixed resistance type high-precision attenuator capable of balance input. It has an L/R separation structure to eliminate crosstalk. In addition, glass epoxy boards, gold-plated contacts, and non-magnetic resistance are arranged, and shielding and vibration prevention are provided by die-casting and extrusion materials.

The power supply section is equipped with large-capacity toroidal power transformers independent of L/R. Considering the interference of magnetic lines of force from the transformers, fuses are also installed separately to eliminate mutual interference.
In addition, in order to prevent the spike noise generated in the first stage rectifying circuit and the digital noise mixed in from the primary power supply, the entire regulator circuit is composed of discrete components. By preventing various types of noise that affect sound quality, music playback with a more quiet feeling is possible.

Function relays and LEDs are separated from the main power supply as secondary independent windings.
This prevents the relay and LED of the amplifier circuit from having a unique characteristic when connected to the power supply and affecting the sound quality.

Output 2 of the output jack is not only a balanced cannon connector but also a common coaxial jack with positive (positive phase) and negative (negative phase) outputs. This allows the system to take advantage of the negative output.
Also, by inputting a positive output and a negative output to the L/R respectively of a general stereo power amplifier, a monaural bridge (BTL) connection without using an inverting amplifier is possible.

It is equipped with a line phase sensor that can detect the polarity of the AC power supply. By unifying the polarity of the total system, sound quality can be improved. Both primary and secondary sides of the power transformer of the Lux products are strictly controlled for polarity.

In order to maintain the freshness of the signal, 27 nitrogen gas-sealed contact relays are used. Moreover, only one relay is used for one channel, giving careful consideration to sound quality.

PC-OCC is used for the wiring material and high-purity 6N wire is used for the transmission line that determines the sound quality of the amplifier.

Newly developed original parts are introduced everywhere. The first stage block with reinforced shield, glass epoxy board with monolithic layout with L/R separation shield, non-magnetic chassis and rigid wooden cabinet are used to cut off the influence of noise and vibration to the signal.

Model Rating
Type Control amplifier
Input Sensitivity / Impedance CD Balance : 150mV/80k Ω
CD Coaxial : 150mV/40k Ω
Phono Line : 150mV/40k Ω
Line1 : 150mV/40k Ω
Line2 : 150mV/40k Ω
Line3 : 150mV/40k Ω
Line4 : 150mV/40k Ω
Tape1, 2 : 150mV/40k Ω
Output terminal Output1:Coaxial1(Positive)
Output2 : Balance1, Coaxial2 (Positive, Negative)
Output Level / Impedance Balance : rated at 2 V, max. 20V/16 Ω
Coaxial : Rated at 1 v, maximum 10V/8 Ω
Total harmonic distortion factor 0.008% or Less (1 V Output, 1 kHz)
Frequency characteristic 5 Hz to 100 kHz ± 0.5 dB or less
Signal-to-noise ratio (IHF-A) 110 dB or more
Attachment Tape Dubbing 2 Systems (1 → 2, 2 → 1)
Rec off
Line phase sensor
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption 40W
External dimensions Width 444x Height 120x Depth 414 mm
Weight 11kg