Technics SL1200/1210 Linear Power Supply | STEP2

Classification: Dealer Listing
Condition: NEW
Location: Huddersfield, United Kingdom
Date of listing: 11/10/2021

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More Information about Technics SL1200/1210 Linear Power Supply | STEP2

Retail price £285 - 10%

  •  Designed in the UK
  • # Improves Techy Performance
  • # Unique Design

If you are considering replacing the stock PSU that came with your Technics please do not need to spend £500+ to get a good performing regulated linear power supply. Our SL1200/1210 PSU is based on our Hi-Fi Choice 5 star rated liner PSU which uses 2 cases and will offer a degree of performance way above it's price point, we don't believe it is necessary to spend £500-£1000 on a psu to take your Technics to the next level of performance. The MCRU psu costs £285.00.

Due to customer deman we have introduced a further 2 power supply's for even better performance, all our power supply's for the Techy will improve the sound quality over the standard one.

The power supply has been manufactured to offer owners of the SL1200/1210 an ideal entry path to up-grade the stock technics power supply. Priced realistically and up-grade able if required. The power supply consists of 2 cases, the main larger case contains a Furutech IEC inlet to connect the mains lead fitted with an Isoclean Audio gold plated audiophile fuse (a MCRU No. 14 mains lead is provided as standard with UK, US or Schuko plug) and a DIN connected DC lead, the smaller case contains the final regulation stage, explanation for the design is below. The smaller case can be put inside the turntable in the space where the old PSU fits or for customers who do not want to remove the existing PSU for whatever reason it can be put underneath the turntable, so the design offers both options. Full installation instructions supplied with all units.

When thinking of regulation, it’s worth remembering the Roman god Janus. Who was the god of gateways, and was a two faced god looking in both directions. Likewise a good voltage regulator is required to look in both directions at once. From one direction you have the mains supply, with the ever increasing noise, distortion and random variation that exists on our household mains supply. In the other direction you have the device you are supplying power to. The load will be asking constantly varying current, and the job of the regulator will be to ignore the varying load and to supply a rock steady voltage that ignores the changing load.

To ask a single regulator to perform both tasks means that it can not do either as well as it could. We don’t ask our regulators to be two faced, we split the two functions into two separate regulators and put them both where they can do the best job.

The first regulator is close to the mains supply, its job is to take the incoming mains and convert it into a low(ish) noise DC supply, and to isolate the mess that is our household power lines from what follows. In most power supplies on the market, the output of the first stage would be directly connected to the load device, and that would certainly be an improvement over the supplies that most manufactures provide. But we can do better by adding the other face of Janus to the system.

The second regulator is supplied with a clean low noise supply, and its job is to handle the changing demands of the load. To do that, it needs to be as close to the load as possible. So we remove the second regulator from the main box, and place it close to the load, both electrically and physically, that removes it from the noise and interference of the mains supply, and allows it to spend its time looking towards the load. Typical commercial voltage regulator chips are general purpose devices, but are not quiet enough for the task on hand, so the second regulator uses a bespoke regulator based on a low noise multi stage filtered voltage reference, a low noise error amplifier and a high current low resistance mosfet. To allow it to handle the changing load it also needs to supply current on demand, so all the remaining space in the second regulator is filled with low impedance capacitors to act as a local energy source.

Using the two stages of regulator, we achieve a noise floor equal or better than most battery supplies, and a effective source resistance of the order of 0.02 ohm (and the short cable run to the load avoids increasing this value by adding copper where its not needed), and the use of a discrete regulator design allows that tiny value to be maintained way above frequency any audio device operates at.

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