You're very welcome Ray, and much appreciated on the kind words! When switching over to the 5U4GB, the presentation will be slightly more laid back due to the higher internal resistance of the 5U4GB versus the 5AR4, but you may find this is a good thing! The reason why an OC3 and OD3 regulator may need to be subbed when switching to the 5U4GB is there is an additional 20 volt drop in the power supply output when using the 5U4GB, and depending on your wall voltage, may be just enough of a drop for the dual OD3's to not stay lit reliably. In that case, when you go to the OC3 and OD3 pair, the B+ voltage will be dropped to around 275 volts instead of 300 volts which is still right in the range for the Unlimited to operate and sound its best :-)
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- 174 posts total
- 174 posts total