I have these 3 amps: early 70s (black line) SVT SVT 2 Pro '73 Traynor YBA-3 Custom Special I have these cabs: Ampeg Heritage 810 Bergantino NV610 Aguilar GS210 and Aguilar GS115 (both 8 ohm, stacked) I recorded all 3 amps with the 810 and 610, and the 2 Pro with the Aguilar stack. The amps were all set with all controls "nooned". The 2 Pro had the Master volume all the way up and the Drive knob all the way off. I used Channel 1 Normal input on the SVT and YBA. Since the amps were all set before the first recording, and then all knobs were untouched for the rest of the time, there are volume differences between the clips. These volume differences demonstrate, for example, how much louder the 810 is compared to the 610, when the amp volume is set the same. The clips: 2 Pro + Aguilar https://dl.dropboxusercontent.com/u/41551864/1-2Pro%2BAguilarGS210%2BGS115.WAV 2 Pro + 810 https://dl.dropboxusercontent.com/u/41551864/3-2Pro%2BH810-2.WAV 2 Pro + 610 https://dl.dropboxusercontent.com/u/41551864/4-2Pro%2BNV610.WAV SVT + 810 https://dl.dropboxusercontent.com/u/41551864/6-SVT%2BH810-2.WAV SVT + 610 https://dl.dropboxusercontent.com/u/41551864/7-SVT%2BNV610.WAV YBA + 810 https://dl.dropboxusercontent.com/u/41551864/9-YBA3%2BH810-2.WAV YBA + 610 https://dl.dropboxusercontent.com/u/41551864/10-YBA3%2BNV610.WAV I've seen numerous posts in the past with people wanting a comparison of the Ampeg 810 and the Bergantino 610. Hopefully, this helps.