Do you fancy a DIY power supply, there are a couple worth building which are very good (L-Adapter or AMB Sigma)?
Other than that there are the fairly cheap Chinese linear supplies on Ebay which I'm not a great fan of as they are usually built with 220V transformers, then there are the iFi power supplies which get good reviews, SBooster BOBW and then stuff from Longdog audio but you're up into the several hundreds of £££ at that point.
Allo have also just brought out their own dual power supply (Shanti), specifically for the Signature or Katana - Josie has just done a review 3 or 4 posts below your post in this forum.
Garrard 401, Jelco 750 with Shuggie, Ortofon 2M Black / ZYX Yatra 100, Project Phono RS with Sigma22 Linear PS, RPi3 + DigiOne + Linear PS, RPi3/1Tb SSD with PiCorePlayer + Linear PS, Perreaux Eloquence 250i 40th Anniversary with ES9038Pro DAC, DCG3 Pre-Amp, Neurochrome 8x2 Pre-Amp, Neurochrome 686 Power amp, Benchmark DAC2 HGC, Primare V25 CD player, Monitor Audio PL300, Sjostrom DCT03 DC Blocker.