Cronus Magnum I or II to Cronus Magnum III:
- New main circuit board
- New rear circuit board
- Upgraded mm/mc phono 45/60 dB gain user adjustable
- Upgraded MOSFET headphone
- Switchable between Ultralinear or Triode operation
- Aluminum remote
- New grounding layout with ultra low noise floor
Cronus Dark Upgrade:
- New main circuit board (From CM 1 or CM II)
- New rear circuit board (From CM 1 or CM II)
- Upgraded power supply
- Upgraded signal tubes
- Upgraded coupling capacitors
- Upgrades to phono stage
- Upgraded binding posts
- Upgraded caps and resistors in key spots
- Dark faceplate
Sphinx v3 Magnum Upgrade:
-New main circuit board (From v1 or v2)
-New rear circuit board (From v1 or v2)
-Power supply upgrades
-Upgraded coupling caps
-Upgrades to the phono stage
-Upgraded caps and resistors in key spots
-Upgraded binding posts
-JJ Gold Pin 12AU7s
-Metal remote
Atlas
Magnum I or II to Atlas Magnum III
-
New circuit board
-
Ultra Linear/triode switch
-
Upgraded wiring
-
Power supply mods
-
Mundorf EVO aluminum/oil coupling capacitors
-
Polypropylene byass capacitors in audio circuit
-
Polypropylene byass capacitors in power supply
-
Precision PRP resistors in critical spots
-
HexFred diodes
-
Cardas binding posts
-
Cardas RCA jacks
Atlas
Dark Upgrade
-
New main circuit board (from version I and II)
-
Upgraded power supply
-
Upgraded signal tubes
-
Upgraded coupling capacitors
-
Upgraded Cardas rhodium binding posts
-
Upgraded resistors and caps in key spots
-
Dark face plate
The
Perseus Magnum, Ninety-Nine and Stereo 90
The
upgraded versions of these products feature a host of premium parts
and circuit upgrades that are cost prohibitive in the standard versions.
These upgrade packages will increase the transparency and dynamics
of your equipment and further improve performance at both frequency
extremes.
Stereo
90 ($695)
- Hex Fred diodes in bias supply
- Screen grid resistors upgraded
- Polypropylene bypass capacitors in filters
-
Bypass coupling caps
- PRP resistors in all critical spots
- Cardas binding posts
-
Cardas RCA jacks (ST90 only)
- Upgraded wiring
Magnum Ninety-Nine
to Super Magnum ($650)
- 50 percent increase in power supply storage
-
Power supply upgrades
-
Coupling cap upgrades
-
Polypropylene bypass capacitors in filters
-
PRP resistors in all critical spots
-
Cardas output wiring
Perseus to Perseus
Magnum ($595)
- Larger power supply
-
Power supply upgrades
-
Hex Fred high speed diodes
-
Coupling cap upgrades
-
Polypropylene byass capacitors in filters
-
PRP resistors in critical spots
-
Cardas output wiring
M-150
to M-180 upgrade ($2,195)
- 50% larger power supply
-
Power supply upgrades
-
Coupling cap upgrades
-
New output tubes
-
Polypropylene byass capacitors in filters
-
PRP resistors in critical spots
-
Cardas RCA jacks, binding post and wiring
Upgrades
subject to change without notice
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Pricing:
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