2. amps-preamps
  3. 125819-79323

Tweaks for a new ARC preamp?

Out of touch audio fan updating (a bit) a vintage system. Preamp is an Audio Research LS2MKIIB with remote which has been mine since 6/1994. Currently on a Siemens and Halske 6922 Cca grey plate with grounded tube cooler and the unit on spikes.  Sony XA5400 ES CD/SACD run balanced through to 2 Sumo Andromeda 2A amps with one amp each running an Acoustat 1100 ...  one channel on panel, one channel on base module.  Secondary source is a Sansui TU-9900 that has the works done by Mike Williams at Radio X including Burr Brown op amps.  All cabling is Straightwire Maestro or Virtuoso and the CD to pre to amp legs are run full balanced.  Room is treated by Acoustic Sciences

Strongly considering a strong deal on a brand new Audio research LS17SE and would like to know from those who have some much more current experience than mine about tubes (other than stock), power cords, etc., as possibilities for the new pre, should I execute the purchase.

Present system has great dynamics and soundstage, imaging is excellent but timbre and musicality are areas I expect to improve upon the change.




midareff1

Showing 1 response by geoffkait

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geoffkait
23,365 posts
 
midareff1 OP
8 posts
08-18-2016 10:16am
Any of you ever try Pearl Metal Tube coolers? Anyone ever try keeping a barrier of sheet copper between their CD/SACD and pre? 

Pearl tube coolers. Yup, tried em. Nothin, honey. The Copper weave Ensemble tube socks, yup. Nothin, honey. Viscoelastic rings, yup. Nothin, honey. Ebony, yup. Nothin, honey. Herbies tube dampers? Bingo!!

As for copper shielding you'd be far better off using mu metal around the transformer. 

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