Previously two versions of the PSU were available. The smaller model is no longer made and only the high performance MB specification is now available. It is still possible to have the smaller units upgraded to MB specification.
|
Check this link for postings and general comments about the show on Hi-Fi Wigwam. http://www.hifiwigwam.com/view_topic.php?id=37086&forum_id=8&page=3 . One comment to anyone considering the purchase of a PSU to add to a PureSound A30: The conversion can also be done leaving the the two central valves of the A30 in position which may be preferable visually. Click here to view the review in Adobe PDF format Now this isn’t a subtle change in performance, or a musically trivial one. It isn’t cosmetic or a question of taste. It cuts right to the heart of the amp’s function and creates better, more credible music.' 'In every instance the Border Patrol effect was nothing short of a transformation. Bass solidified, imaging became significantly more three-dimensional and substantial, and the power-supplied amp made the regular version sound, quite literally, a mess.' Hi-Fi+ 2001 PRODUCT OF THE YEAR awards issue. The Border Patrol PSU valve rectified choke input filter high voltage supply replaces the existing high voltage supply in valve amplifiers and valve electronics. An ideal combination of regulation and freedom from electronic noise, it makes amplifiers sound simultaneously more relaxed and more dynamic and controlled. Almost all amplifiers will be substantially improved, including those that already use valve rectifiers and chokes in their power supplies (e.g. Audio Note Meishu, Quest series, Kit1/3 and Art Audio Diavolo models which use them in a capacitor input configuration). Click here to view the review in Adobe PDF format Now this isn’t a subtle change in performance, or a musically trivial one. It isn’t cosmetic or a question of taste. It cuts right to the heart of the amp’s function and creates better, more credible music.' 'In every instance the Border Patrol effect was nothing short of a transformation. Bass solidified, imaging became significantly more three-dimensional and substantial, and the power-supplied amp made the regular version sound, quite literally, a mess.' Hi-Fi+ 2001 PRODUCT OF THE YEAR awards issue. The Border Patrol PSU valve rectified choke input filter high voltage supply replaces the existing high voltage supply in valve amplifiers and valve electronics. An ideal combination of regulation and freedom from electronic noise, it makes amplifiers sound simultaneously more relaxed and more dynamic and controlled. Almost all amplifiers will be substantially improved, including those that already use valve rectifiers and chokes in their power supplies (e.g. Audio Note Meishu, Quest series, Kit1/3 and Art Audio Diavolo models which use them in a capacitor input configuration). |
| Upgrade to MB PSU. If you are the owner of a Border Patrol PSU it can be upgraded to the high performance MB . If you thought the standard unit was good, wait until you hear the MB supply. Even if your amplifier theoretically does not need the extra current capability, the conversion will produce a substantial sonic improvement. Contact BorderPatrol for more information . |
| Amplifiers Converted. (click on active links for installation instructions) |
| Recent conversions: Mactone 300B, Cayin 50T (Active sites contain installation instructions) Puresound A30 Art Audio Quintet /Concerto | Diavolo Tempo Audion Silver Night Audio Innovations Series 500 | Series 700 | Series 800 MK1 | Series 800mk3/Anniversary/S1000mk3/S1000mk3SE | First Audio / Second Audio Series 200 / Series 300 | P2 Canary Audio 608 Cary 300B, AES300B Gamma Space Reference 300B Leak Stereo 20 Papworth TVA8 SJS Arcadia 1 and 2 pre-amplifiers. Unison Research Simply 1/Simply 2 World Audio Design K5881mk1/mk2 | 300B PSE mono-blocks . General: 300B/VV30B/2A3/6B4G/EL84/EL34/6L6/5881 push-pull or single-ended amplifier |
 Output Voltages: (selected internally) approx 310V, 380V, 420V.Max Current: 350mA MB Input voltages: 0-220-230-240V or 0-110-115-120V Dimensions: 345 x 220 x145mm Shipping weight: 15kg (MB) |
|
The Border Patrol MB Power Supply is a unique audio component that transforms the performance of valve amplifiers. 
Thank you to Alan Sircom and Hi-Fi+ for the great review of the BorderPatrol MB PSU/PureSound A30 combination. Both items are previous winners of Hi-Fi+ Product of the Year awards and make an excellent combination. This is a definite case of the whole being greater than the sum of the parts.