Regarding the gar2520 it says on the CAPI website it says "Sonically, it's hair-splittingly close to a vintage Huntington 2520". I wanted to hear the difference so I compared the gar2520 to an original vintage Huntingdon 2520 (I have one for sale - check my other listings) and I agree, you would be hard pressed to tell them apart..
I have quite a few of these so just letting two of them go to free up a bit of space. They sound amazing, any signal going through them sounds better. The item "CAPI VP28 500 Series Lunchbox Preamp" is in sale since Monday, March 05, 2018. This item is in the category "Musical Instruments\Pro Audio Equipment\Preamps".
The seller is "julianware" and is located in Nottingham. This item can be shipped to North, South, or Latin America, European Union member countries, Japan, Australia.