Vincent Audio SA-T7MK Tube Stereo Preamplifier - Black

Nine Tubes, and a Bluetooth Receiver

The SA-T7 MK is Vincent's reference preamplifier, and it does not travel light. Nine valves sit inside: four 6SCH9P, four 6SCH51P, and an 85A2 regulator holding the supply steady. All of them are new old stock, sourced from telecommunications supplies.

What makes it unusual is what sits alongside the glass. Optical and coaxial digital inputs feed a converter running to 24-bit/192kHz. Bluetooth handles a phone. A TV, a CD transport and a streaming service all reach a tube preamp without a separate DAC on the shelf.

Analog connections are generous too. Six RCA line inputs take the rest of your system. Two RCA pre-output pairs go out to amplifiers, with a record output alongside them and two 3.5mm jacks to switch a Vincent power amplifier in step.

What the Bench Says About the Glass

Tubes are usually a trade. Here the numbers do not read that way. Frequency response covers 10Hz to 100kHz within a tenth of a decibel. Distortion stays below 0.001% at 1kHz, and signal-to-noise is typically better than 100dB A-weighted.

Gain is 13.3dB at the volume control's maximum, from an input sensitivity of 430mV for two volts out. That is a comfortable match for most power amplifiers, and it keeps the volume control working in a useful part of its travel rather than pinned near the bottom.

The chassis measures 430 by 135 by 370mm and weighs 8.5kg, in black or silver. Power draw peaks at 58 watts, so nine tubes do not turn your rack into a radiator. Vincent covers it for two years.

What Reviewers Are Saying

Anthony Kershaw reviewed the SA-T7 MK for Audiophilia on August 1, 2024. His summary: "German engineering and manufacture, lovely sound at a reasonable price." He found that "the SA-T7 packs an audiophile wallop."

On the tubes he noted: "Vincent has taken great pains to implement their tubes (all NOS used in telecommunications)." He left it powered all day and reported: "The unit was well-ventilated but did not get too hot under the fingers."

One quirk worth knowing before it arrives. Kershaw notes there is "no on/off on the remote" — you switch the preamp on at the front panel, and the handset then covers mute, volume and input select.

Who Is This Preamplifier Best For?

• You want tubes without a separate DAC — optical, coaxial and Bluetooth are built in, running to 24-bit/192kHz. A TV and a disc player join a valve preamp with no converter to buy.
• Your system is mostly analog — six RCA line inputs mean a tuner, a CD player, a phono stage and a streamer all stay connected at once.
• You run two amplifiers, or a subwoofer — two pre-output pairs feed both from the same volume control, so you do not need a splitter or a second preamp.
• You keep gear a long time — the valves are new old stock types built for telecom duty, and Vincent backs the unit for two years, so a tube preamp stops feeling like a maintenance project.
• You play records — the SA-T7 MK takes line and digital sources only, so a turntable needs a phono stage ahead of it. Choose one to match your cartridge from our phono preamplifiers and feed it into any RCA input.

How Does It Connect to Your System?

Run one RCA pre-output pair to your power amplifier and keep the second for a subwoofer. Analog sources fill the six line inputs. The record output sends a fixed level to a recorder.

A TV or disc player connects by optical or coaxial, and a phone pairs over Bluetooth. Wire the 3.5mm power-control jacks to a Vincent amplifier and the two switch together. Power up at the front panel, then use the remote.

Pairs Well With

Building around the SA-T7 MK? Here are some great companions:

• Power Amplifier: The power-control jacks are ready for one — see our Amplifiers.
• Phono Stage: Bring a turntable into the system — see our Phono Preamplifiers.
• CD Transport: Use the coaxial or optical input — see our CD Players & Transports.
• Interconnects: Good RCA cable suits a tube front end — see our Interconnect Cables.

Frequently Asked Questions

What tubes does it use?

Nine in total: four 6SCH9P, four 6SCH51P, and one 85A2 regulator tube in the power supply.

Does it have a built-in DAC?

Yes. The optical and coaxial inputs feed an onboard converter that handles up to 24-bit/192kHz.

Can I stream from my phone?

Yes. Bluetooth is built in and appears as its own input, so a phone or tablet connects without extra hardware.

How many inputs and outputs are there?

In: six RCA line pairs, one optical, one coaxial and Bluetooth. Out: two RCA pre-output pairs, a record output, and two 3.5mm power-control jacks.

How warm does it run?

Power consumption peaks at 58 watts. Give it ventilation above and behind, as you would any valve component, and it will happily stay on all evening.

What finishes and warranty are available?

Black or silver, at 430 by 135 by 370mm and 8.5kg, with a two-year warranty.

See It in Action

AV Atmos introduces the SA-T7 MK:

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Learn More

Want to learn more about tube preamplifiers, Bluetooth streaming, or matching a preamp to a power amplifier? Visit our Learning Center for guides, tips, and expert advice.