Technics SU-V6X Vintage Integrated Amplifier – 100 WPC, Japan

Technics SU-V6X — 100 Watts a Channel, MC and MM Phono, Class AA

A serious, heavyweight Japanese integrated amplifier from Technics’ most technically ambitious period, offering genuine high power, a full moving coil phono stage, and measured performance that still reads impressively four decades on.

Technics called the SU-V6X a Computer Drive New Class A amplifier, and the specification sheet earns the marketing. It delivers 100 watts per channel into 8 ohms — and, unusually, the same 100 watts into 4 ohms, which speaks to a power supply built with headroom rather than optimism. Total harmonic distortion is quoted at 0.003 percent at rated power across the full audio band, falling to 0.001 percent at half power. Damping factor is 80 into 8 ohms. These are not the numbers of a starter amplifier.

The DC Design

The frequency response is where the DC design shows itself: 0.7 Hz to 140 kHz at minus 3 dB through the line inputs. Within the audible band the amplifier is essentially ruler-flat, quoted at 20 Hz to 20 kHz within 0.2 dB.

The Phono Stage

The phono stage is a full dual-standard design handling both moving magnet and moving coil cartridges, with the moving coil input sensitive enough for genuinely low-output cartridges. A 30 Hz subsonic filter is provided to control woofer excursion from warped records — the kind of provision that tells you the designers expected this amplifier to be used with a serious turntable.

Inputs and Sources

Connectivity is exceptionally generous. Beyond phono, there are dedicated inputs for tuner, CD, TV/Aux, and Video/Aux, plus two complete tape loops with dubbing between them. A separate graphic equaliser loop with independent output and input allows an external equaliser or signal processor to be inserted into the chain, or the amplifier’s preamplifier and power sections to be used separately. Two pairs of speaker outputs, main and remote, are provided.

Radique-Fitted Enhancements

This example has been fitted with high quality five-way binding posts in place of the original speaker connectors. It is a meaningful practical upgrade: five-way posts accept banana plugs, spade lugs, pin connectors or bare wire, grip properly, and make a far better electrical connection than the factory arrangement. For anyone running decent speaker cable, it removes the single most common frustration owners have with this model.

Condition and Service

This unit has been recently serviced, and has been thoroughly inspected and tested to confirm full functionality.

Why This One

Made in Japan, substantial in the hand at over 24 pounds, and specified to a standard that comfortably outruns its modest reputation — a genuinely capable amplifier for a system built around vinyl and real speakers. Available now.

Technics SU-V6X Specifications

• Power output: 100 watts per channel into 8 ohms, 20 Hz to 20 kHz, both channels driven
• Power output: 100 watts per channel into 4 ohms
• Total harmonic distortion: 0.003 percent at rated power, 0.001 percent at half power
• Damping factor: 80 into 8 ohms, 40 into 4 ohms
• Frequency response, line level: 0.7 Hz to 140 kHz, minus 3 dB
• Frequency response, phono: RIAA standard curve, plus or minus 0.5 dB
• Phono input: moving magnet and moving coil
• Line inputs: Tuner, CD, TV/Aux 1, Video/Aux 2
• Tape: two full loops with dubbing, 150 mV record output
• Graphic equaliser loop: separate output and input
• Subsonic filter: 30 Hz, minus 6 dB per octave
• Loudness and muting circuits, bass and treble controls
• Speaker outputs: two pairs, main and remote — 4 to 16 ohms singly, 8 to 16 ohms together
• Speaker connections: upgraded five-way binding posts
• Headphone output
• Power supply: AC 120 V, 60 Hz
• Dimensions: (Width x Height x Depth) 16.9 x 5.6 x 15.0 inches (430 x 142 x 380 mm)
• Weight: 24.3 lbs (11 kg)

⚠️ Important Information for International Buyers

This unit is configured for North American 110/120V power. Buyers outside North America will require a step-down transformer and appropriate plug adapter.

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Backed by Radique Audio’s Bumper-to-Bumper Warranty and our Perpetual Trade-Back Program. When you’re ready to move on, we’ll take it back. That’s the Radique difference.

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