infiniti cap signature upgrade for ARC


Is anyone know where to purchase infiniti cap to upgrade arc reference one pre-amp? I need dealer's phone # and web address.

Thanks
stud
I bought my REF 1 used. it came with the infiniti caps, detachable power cord, gain control adjustment, etc. already installed. In the owners manual was a service sheet from Lenbrook Industries indicating a v.4 upgrade. If you want better details, you should contact Leonard at Audio Research or Lenbrook Industries. They'll be a lot more specific. I upgraded from a ARC LS16 to the REF 1. It was an amazing difference in the overall sound quality, dynamics, soundstage, and detail. I added a Shunyata Viper power cord and NBS Monitor I XLR interconnects, and man am I one happy camper!!!
Hey Rosstaman, can you tell me more about Lenbrook Industries? Are they aftermarket modification specialists? I am thinking about purchasing an used REF 1 from a friend here, and would like to get the infiti cap upgrade. You mentioned the v.4 upgrade. Are there different upgrade options?
Have you tried Audio Research Corporation. www.audioresearch.com There phone number is 763-577-9700. Another possibility is Lenbrook Industries, phone# 781-784-8586. They did a v.4 upgrade on my ARC Ref. 1.