ZPA0.3
Serial # Name Location color
00094 Jesse Short Canada Black
00104 Vin Quach California, USA Black
00135 Terje Hokholt Norway Black
00141 Tom Erik Skaret Norway Black
00164 Stefan Svensson Norway Black
00205 David Werrner California, USA Black
00226 Jarek Jahaaski California, USA Black
00246 Scott Burnett California, USA Black
00247 Joshua Van Drogos Illinois, USA Black
00294 Scott Burnett California, USA Black
00365 David Werner California, USA Black
00408 Vin Quach California, USA Black
00489 (d) David Werner California, USA Black
00579 Tom Erik Skaret Norway Black
00618 Alfaholic Norway Black
00637 Terje Hokholt Norway Black
10015 Ricky Schultz Denmark Black
10024 Demosta Finland Black
10025 Joe Branam Tennessee, USA White
10069 Ed Brutkoski Vermont, USA White
10071 Steve Cross Canada White
10077 Damien Andre Winnipeg, Canada Black
10109 Nick Parr United Kingdom Black
10122 Chris Walters North Carolina, USA Black
10323 Terry Coleman Washington, USA Black
10344 Terry Coleman Washington, USA Black
10353 Scott Burnett California, USA Black
10371 Jesper Holm Denmark Back
10409 Art Hopfer Oregon, USA Black
10423 Jesse Short Ontario, Canada Black
10437 Jared Jahaaski California, USA Black
10461 Art Hopfer Oregon, USA Black
10506 Joe Branam Tennessee, USA White
10687 Rafael Pancho Ortiz Florida, USA Black
10751 Terje Hokholt Norway Black
10820 Terry Coleman Washington, USA Black
10891 Ben Osborne Tennessee, USA Black
10922 Jared Jahaaski California, USA Black
11005 Joe Branam Tennessee, USA White
11034 Ben Osborne Tennessee, USA Black
278336230005 Scott Burnett California, USA Black
XXX David Werner California, USA Black
ZPA0.5
Serial # Name Location Color (O/I)
00001 Vin Quach California, USA Black/red v1
00020 Scott Burnett California, USA Black/red v1
00033 Jesper Holm Denmark Black/red v1
00056 (d) David Werner California, USA Black/red v1 00098 Matt Siddick UK Chrome/red v1
00115 Steve Cross Canada Black/red v1
00155 Jason Campbell Michigan, USA Black/green v1
00198 Nathen Haglington UK Black/red vq
00243 David Werner California, USA Black/red v1
00249 Damien Andre Winnipeg, Canada Black/red v1
00255 Zerpoint0.5 Belgium Black/red v1
00256 Zeropoint0.5 Belgium Black/red v1
00262 Dereck Scott Canada Black/red v1
00268 (d) David Werner California, USA Black/red v1
00289 Andy Weiser Georgia, USA (4 sale) Black/red v1
00516 Scott Burnett California, USA Black/red v1
00524 Nathan Haglington UK Black/red v1
00558 Jared Jahaaski California, USA Black/red v1
00560 Caleb Crawford Florida, USA Black/red v1
00612 David Werner California, USA Black/red v1
00626 Matthew Bates Iowa, USA Black/red v1
00735 Terje Hokholt Norway Black/red v1
10036 Sean Cahill Washington, USA Black/green v1
10046 David Wilson Louisianna, USA Black/green v1
10079 Ed Brutoski Vermont, USA White/green v1
10102 Scott Burnett California, USA Black/green v1
10117 Steve Cross Canada Yellow/green v1
10137 Joe Branam Tennessee, USA White/green v1
10138 Joe Branam Tennessee, USA White/green v1
10149 Ben Osborne Tennessee, USA White/green V2
10164 Dan Davis Washington, USA White/green V2
10168 Jared Jahaaski California, USA Black/green v1
10202 Ricky Schultz Denmark White/green V2
10210 Terry Coleman Washington, USA White/green v1
10226 John Davis Oregon, USA Black/green v1
10236 (d) Scott Burnett California, USA Black/green v1
10241 Will Engel Texas, USA White/green v2
10242 Phil Gibbs Indiana, USA Black/green v1
10245 Alfaholic Norway White/green v1
10250 Joe Branam Tennessee, USA White/green v2
10264 Stefan Svensson Norway Black/green v1
10306 Jared Jahaaski California, USA Black/green v1
10373 Phil Gibbs Indiana, USA Black/green v1
10550 Kevin Gee Ohio, USA Black/green v1
10659 Ed Brutkoski Vermont, USA Black/red v2
10757 Jared Jahaaski California, USA Black/green v2
10773 Nathan Haglington UK Black/green v2
10777 Nathan Haglington UK Black/green v2
10803 Jesse Bolduc Minnesota, USA Black/green V1
10813 zeropoint0.5 Belgium Black/green v1
10870 zeropoint0.5 Belgium Black/green v1
10891 Mads Jensen Denmark Black/green v1
10910 Andrew Ferrell Ohio, USA Black/green v2
10929 Terry Coleman Washington, USA Black/green v2
11217 Terry Coleman Washington, USA Black/green v2
11224 Nathan Haglington UK Black/green v2
11305 Jared Jahaaski California, USA Black/green v2
11379 Artie Erdman Maryland, USA Black/green v2
11422 Rafael Pancho Ortiz Florida, USA Black/green v2
11433 Scott Burnett California, USA Black/green v2
11456 Ben Osborne Tennessee, USA Black/green v2
XXX Terje Hokholt Norway Black/green v2
XXX zeropoint0.5 Belgium White/green v2
(d) = dead amp, for parts use only
XXX = serial number is missing
Registry
ZPX2
Serial # Name Location Color
0030 zeropoint0.5 Belgium Black
0098 Stefan Svensson Norway Black
0220 Stefan Svensson Norway Black
0325 Terry Coleman Washington, USA Black
0383 Ben Osborne Tennessee, USA Black
0393 Terry Coleman Washington, USA Black
2849362130002 Jesse Short Ontario, Canada White
2848362130007 David Werner California, USA Black
2848362940001 Damien Andre Canada Black
3679363700002 Steve Cross Canada Black
0700366140040 Dan Davis Washington, USA Black
XXX Terje Hokholt Norway Black
It is commonly thought that while looking at the ZPA0.5 serial numbers the version 2 is signified by the serial starting in a '1', but this is not true. It looks as though the '1' signifies the change over from red torroids to green ones. The version 2 came out a little later. There are a few odd amplifiers that have inconsistent colors on the torroids, an explanation has not been provided.
In the mid '90s Phoenix Gold created a "no holds barred" line of amplifiers (and crossovers) that were extremely powerful and had very high sound quality. While they were not officially a limited edition amp, they were pretty low in production numbers and are rare. The amplifiers came with a crossover defeat card but an optional crossover card (ZPAXO) was available (and is pictured top right). Phoenix Gold also offered a matching 3 way crossover called the ZPX2, and a matching balanced line amplifier called the TBAT with balanced (CAT6) cables. Throughout the years they changed transformer colors, exterior colors, and changed from version 1 to 2.
ZPA Series
Additional info:
The version 1 amps came with 11 blade fans, the power terminal blocks were drilled all the way through, leaving them open to the inside of the amp, and the early version 1 amps came with a white logo on the plexi cover rather than gold foil. The gold screws used to mount the plexi cover changed size about halfway through the run of version 1 amps. They also changed the cooling shields (metal plate running under the fans) from being mounted to the heat sink plates (3 pieces) to one long piece that bolts from endplate to endplate.
Version 2 amps had 7 blade fans, had power terminal blocks that were not drilled all the way through, and had some other updates to the board itself to accomodate the new fans. The version 2 did not start at serial number 10000, but they did shortly thereafter. The power terminals did change from the open type to the solid type right around serial number 10000. The serial numbers appear to have jumped around a bit. Phoenix Gold might have jumped numbers when they made updates or revisions to the boards. The serials went from 1-999, and then rather than going to 1000 it went to 10000.
Typically, the white amps came with clear plexi and black amps came with tinted plexi, but examples of that reversed have popped up from time to time. Also, all ZPA0.3 amps came with green transformers. On the ZPA0.5 they started red, and went to green. There have been a few outliers, no reason for this is known at the moment.