flo1984
05-12-2023, 09:23
Victor JVC M-3030 Stereo Dual-Mono direct coupled Power Amplifier very rare in UK !It is in fantastic condition. Amplifier had a full service so is in perfect condition for many, many years of great hassle free listening.True dual mono construction with 2 massive encapsulated transformers.This was exclusively made for japanese market therefore you will simply have to use a step down transformer like https://airlinktransformers.com/category/japanese-voltage-converters .Can drive hungry speakers like Kef Reference series or Dynaudio without problem.PS:I have the matching preamplifier P3030 too
Price is £800 collected from London or courier anywhere in UK.
"I owned an M-3030 twice, and would purchase another one if I could find one. I have compared it to a number of amps including Krell KSA-80B, MDA-300's, and A FPB-700cx, as well as several Adcom's, and a few others. In the systems it was in, it clearly bested any of the Adcom units (some of which had been highly modified), and was not embarrassed by any of the Krell gear."Specifications
Type Stereo power Amplifier Circuit System
Signal circuit : Direct Coupling (ICL) cascode double differential common phase feedback input
Parallel push-pull OCL Output
Power Supply Circuit : Class A / Class B (for left and right only) Independent Power Supply Effective power
(Both channel drive, 20 Hz to 20 kHz)130W + 130W (4 Ω)
100W + 100W (8 Ω)Harmonic distortion factor (8 Ω, both channel drive)Effective Output : 0.02% or Less (20 Hz to 20 kHz), 0.005% or Less (1 kHz)
At 50W output : 0.01% or less (20 Hz to 20 kHz)
At 1W output : 0.01% or less (20 Hz to 20 kHz)
Output terminal
Speaker : 4 Ω ~ 16 ΩPower supply voltage
100 VAC
External dimensionsWidth 420x Height 166.5x Depth 300 mm
Weight19.2kg
In order to reduce dynamic interference distortion, the AB and LR independent power supply system is adopted, which is further developed from the A-class and B-class independent two power supply system adopted by VICTOR/JVC.
Dynamic interference distortion occurs when the current consumption of the class B power amplifier stage (output stage) changes drastically according to the signal level change and interferes with the class A amplifier stage before the output stage where the voltage is amplified. To fundamentally solve this problem, in the class A and class B independent two power supply system, the power supply for the class A stage and the class B stage is separated from the transformer itself, and the power supply for the class A stage is made constant voltage. This prevents the voltage fluctuation of the class B stage from being directly transmitted to the class A stage, thus preventing dynamic interference distortion.
The AB / LR power supply system adopted for the M-3030 has been developed to further reduce distortion by using the power supply for the B stage exclusively for the left and right channels.
Twin monaural configuration is adopted to reduce static crosstalk such as jumping interference between board patterns and signal wires, potential difference between ground lines, jumping interference due to chassis structure, etc.
An ICL (input, capacitor-less) circuit has been adopted in which the coupling and condenser of the input section are eliminated.
Equipped with left and right independent level control.
It is equipped with two input terminals, Direct and Subsonic
Price is £800 collected from London or courier anywhere in UK.
"I owned an M-3030 twice, and would purchase another one if I could find one. I have compared it to a number of amps including Krell KSA-80B, MDA-300's, and A FPB-700cx, as well as several Adcom's, and a few others. In the systems it was in, it clearly bested any of the Adcom units (some of which had been highly modified), and was not embarrassed by any of the Krell gear."Specifications
Type Stereo power Amplifier Circuit System
Signal circuit : Direct Coupling (ICL) cascode double differential common phase feedback input
Parallel push-pull OCL Output
Power Supply Circuit : Class A / Class B (for left and right only) Independent Power Supply Effective power
(Both channel drive, 20 Hz to 20 kHz)130W + 130W (4 Ω)
100W + 100W (8 Ω)Harmonic distortion factor (8 Ω, both channel drive)Effective Output : 0.02% or Less (20 Hz to 20 kHz), 0.005% or Less (1 kHz)
At 50W output : 0.01% or less (20 Hz to 20 kHz)
At 1W output : 0.01% or less (20 Hz to 20 kHz)
Output terminal
Speaker : 4 Ω ~ 16 ΩPower supply voltage
100 VAC
External dimensionsWidth 420x Height 166.5x Depth 300 mm
Weight19.2kg
In order to reduce dynamic interference distortion, the AB and LR independent power supply system is adopted, which is further developed from the A-class and B-class independent two power supply system adopted by VICTOR/JVC.
Dynamic interference distortion occurs when the current consumption of the class B power amplifier stage (output stage) changes drastically according to the signal level change and interferes with the class A amplifier stage before the output stage where the voltage is amplified. To fundamentally solve this problem, in the class A and class B independent two power supply system, the power supply for the class A stage and the class B stage is separated from the transformer itself, and the power supply for the class A stage is made constant voltage. This prevents the voltage fluctuation of the class B stage from being directly transmitted to the class A stage, thus preventing dynamic interference distortion.
The AB / LR power supply system adopted for the M-3030 has been developed to further reduce distortion by using the power supply for the B stage exclusively for the left and right channels.
Twin monaural configuration is adopted to reduce static crosstalk such as jumping interference between board patterns and signal wires, potential difference between ground lines, jumping interference due to chassis structure, etc.
An ICL (input, capacitor-less) circuit has been adopted in which the coupling and condenser of the input section are eliminated.
Equipped with left and right independent level control.
It is equipped with two input terminals, Direct and Subsonic