InfiniCaps or V cap upgrades for ARC LS7

Hi Tubegroover, 
I'm not familiar with this particular ARC Line Stage and I'll defer to your assessment. You believe that 50.00 USD for the V cap OIMP  isn't a good value upgrade? These caps were very beneficial in my older Quicksilver preamplifier. Is the LS7 that unworthy? 
Thanks, 
Charles, 

Hi Charles

I hear you, 50.00 for the OIMP caps really isn't the overriding consideration but as adg101 points out and I concur, this particular preamp isn't really worth spending too much time and money on. It's an entry level pre and IMHO and experience with ARC pre-amps not worth it. I would concur with adg101 and focus on something better which I feel would yield a better outcome in time and money spent. The bottom line is that you can't make a silk purse out of a sow's ear and I feel that is the case here. In any case don't spend TOO much eddy1 whatever you decide.

Tubegroover, 
Thanks for the insight on this unfamiliar component. 
Charles, 

Thank you.

The ARC LS-7 is an ideal line stage to upgrade. I upgraded mine with the help of two long time Audio Research employees / friends in their spare time around 10 years ago. One was Ward Fiebiger an ARC engineer who has since passed away. The other was a since retired ARC service tech who worked there for many years. The power cord was replaced with a Furutech gold plated IEC ( used with audiophile grade power cord) , Two (2) 4 mf 425 V Stealth brand coupling caps ( mounted on underside of circuit board) replaced the stock caps. Steath brand (sourced from Peter Montcrief owner of Wonder caps) bypasses were also used ( mounted on top side of board). The stock ( V1-V4) 6922 Sovtek tubes were replaced with 1960’s Siemens Halske 7308’s ( NOS). The two power supply caps were replaced with better ( low ESR) Panasonic caps ( p/n’s EET-ED2W101BA and EET-ED2W471EA. The larger Panasonic electrolytic power supply capacitor was bypassed with a 2 mf reference grade V cap ( mounted on underside of circuit board). Another smaller value teflon cap was used as well for bypsssing the power supply. The rectifier stage was upgraded with Schottky zero recovery diodes. The power transformer in this modified line stage remained stock. A Goldpoint brand stepped attenuator replaced the stock Alps brand gain control. The chassis was damped ( isodamp) and the stock tube sockets were replaced with ARC gold plated sockets. The stock rubber ARC feet were replaced with brass still points.   The unit sits on a  2D Sieismic sink for isolation.  This line stage is currently used with an ARC VS 115 amp ( using Vandersteen 3A signature loudspeakers) with outstanding playback resolution. The sound stage is deep and very wide with a lush top end and excellent mid and low end bass. Parts cost was pricey ( around 2 grand as I recall) but worth every penny and essentially turned the LS-7 into a small chassis single ended Reference Line stage.