Preamps - Audio Research Or Conrad-johnson ?

the thin end of the wedge
tomh
Posts: 3
Joined: 20 Aug 2005 03:49

Re: Preamps - Audio Research Or Conrad-johnson ?

Post by tomh » 28 Oct 2019 14:35

Years ago, I spent a great deal of time comparing the Audio Research SP3a to the Conrad Johnson PV5 with their mod which removed all electrolytic from the power supply. Although not a blind comparison the levels were matched and the listening went on and off for several days with friends. Hands down the Conrad Johnson, post mods, rendered more detail with less fatigue than the SP3A. The tubes in the Conrad were new old stock US made gold military 5751s. I'm not sure of the SP3As but they were not worn out. Both preamps sounded quite good but the Conrad rendered a more realistic sound stage with jazz and classical music. On produced rock, the differences were far less apparent.