LUXKIT A3032

Commentary

Preamplifier kit incorporating LUXMAN tube control amplifier CL32 into a kit.

The equalizer amplifier section uses a 3-stage cathode-cathode NF circuit incorporating SRPP (Shunt Regulated Push-Pull) output circuit and feeds back from the output stage to the first stage cathode. This circuit realizes high input resistance and high S / N ratio while keeping distortion factor low.

A two stage plate-cathode NF circuit is adopted for the flat amplifier section. Feedback is applied from the second stage cathode to the first stage plate. Local feedback is applied between the plate and plate to improve the bare characteristics before applying the major NF.

A cathode follower circuit is used for the output stage.

A 4-channel volume has been adopted to improve the SN ratio at a practical level.

A new type of low-frequency filter is used to cut the very low frequencies from 5 Hz to 10 Hz without increasing the number of active elements and minimizing the influence on the audible frequency band.

By eliminating most of the shielding wires in the signal path and routing the input circuit in the shortest path, long-term stability and excellent characteristics are ensured.

A power transformer using a cut core is used for the power supply part, and a DC ignition using a constant voltage circuit is used for the heater power supply to prevent mixing of pulse noise.

Crosstalk characteristics have been improved by separating the vacuum tubes except for the cathode follower of the output stage to the left and right.

There was a muting circuit kit as an optional item sold separately.
This kit allows you to disconnect the output circuit until the operation is stable.

Model Rating

Type	Tube type control amplifier kit
Output voltage	Rating : 2 v Maximum : 15 V (Distortion Factor 0.3% or Less)
Output impedance	Pre out : 600 Ω Rec out : 560 Ω
Total harmonic distortion factor	0.03% or Less (Output 2 V, 20 Hz to 15 kHz)
Frequency characteristic	10 Hz to 40 kHz - within 1 dB
RIAA deviation	30 Hz to 15 kHz ± 0.5 dB or less
Crosstalk	-65dB or less
Input Sensitivity (Output 1 v)	Phono1, 2 : 2 mV Tuner, Aux2 : 160 mv ~ 5 v (variable) Aux1:160mV
Input impedance	Phono1 : 30k Ω ~ 50k Ω ~ 100k Ω Phono2 : 50k Ω Aux1 : 200k Ω Tuner, Aux2 : 100k Ω
Signal-to-noise ratio (IHF-A corrected) Input short)	Phono : 80 dB or more Tuner, Aux : 95 dB or higher
Phono allowed input	560 mV or More (1 kHz, RMS)
Attachment	Linear equalizer Ultra low pass filter Two tape monitors Tape dubbing Input impedance adjustment for Phono1 Input level set for Tuner and Aux2 Attenuator Output Selector Other
Vacuum tube used	12AX7/ECC83x5 12AU7/ECC82x2
Pwer	100 VAC, 50Hz/60Hz
Power consumption	40W
External dimensions	Width 438x Height 77x Depth 322 mm
Weight	5.7kg
Sold Separately	Muting Circuit Kit OP3032 (¥ 2,500)