Thorens TPN 124 – External Linear Power Supply

The Thorens TPN 124 is an external linear power supply with a toroidal transformer, originally developed for the TD 124 DD and today serving as a sonic upgrade for the direct-drive turntable TD 404 DD.

Instead of a simple plug-in power supply, the TPN 124 provides the turntable with especially clean, low-noise voltage – separately for the drive (24 V) and the tonearm lift (5 V). Sounds unspectacular, but you can hear it.

Why an external linear power supply?

Because the drive can only run as well as its power supply is clean. The toroidal transformer and the stable, low-noise voltage regulation of the TPN 124 keep interference away from the motor. This improves speed stability and running smoothness – and that's exactly what you hear as a quieter background, more solid pitch and more fine dynamics. The separate supply for the turntable and electric lift additionally ensures a clean separation of the circuits.

What you hear

More calm and transparency. Notes stand more stably in space, quiet details emerge more clearly, the soundstage feels tidier and more natural. Not a sledgehammer effect, but the proverbial black cloth behind the music – the kind of improvement you only miss once it's taken away again.

Who is the TPN 124 for?

Primarily for owners of a Thorens TD 404 DD who want to extract the last bit of running smoothness and fine dynamics. Straight talk: the TPN 124 is a targeted upgrade, not a must-buy – the TD 404 DD also plays very well with its standard power supply. But anyone who wants to hear the difference and values maximum drive quietness makes the right choice with the TPN 124. We'll quickly clarify with you whether it suits your device.

Our verdict

The TPN 124 is the clean, manufacturer-original power supply upgrade for the TD 404 DD: more running smoothness, more fine resolution, without any tinkering. A sensible step for anyone who wants to consistently optimize their turntable.

Technical specifications

• Type: external linear power supply for turntables
• Transformer: toroidal transformer
• Outputs: separate voltages for turntable (24 V) and tonearm lift (5 V)
• AC input: 220–230 V (112 V version available)
• Power connector: C13 (IEC connector)
• Compatibility: Thorens TD 404 DD (originally developed for TD 124 DD)
• Finish: black
• Warranty: 2 years
• Included: TPN 124 linear power supply incl. connection cable to the turntable

Frequently asked questions

Which turntables does the Thorens TPN 124 fit?
The TPN 124 is intended as an upgrade power supply for the Thorens TD 404 DD. It was originally developed for the TD 124 DD, which already comes with it as standard. It's not intended for other models – if in doubt, we'll quickly check compatibility for you.

What does an external linear power supply bring sonically?
A cleaner, lower-noise power supply for the drive. This improves speed stability and running smoothness and provides a quieter background, more stable pitch and more fine dynamics. The effect is subtle, but clearly audible in direct comparison – especially in quiet, finely resolved passages.

Is a cable included?
Yes. The TPN 124 comes with the matching connection cable to the turntable. A standard C13 IEC cable serves for the mains connection. So it's ready to connect as soon as it arrives at your place.

Why buy the Thorens TPN 124 at HD Zürisee?
Because we tell you honestly whether the upgrade is worth it for your setup, and check compatibility beforehand. As an experienced team in Wädenswil, we advise you on the sensible order of upgrades – and remain there for you after the purchase too.

Pairs well with

The matching turntable and more upgrades are in the Thorens range and among all turntables. The matching electronics are available under phono preamps.