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OK, Send me the invoice, I have the additional parts already so it will not be too painful. I will let the customer pay me in three monthly installments, no interest. I will do the unboxing and installation pictures. Mark

Sure I'll bite. Maybe Joe will give me an allowance for a review here after the installation of the new Meters and Faceplate? Unfortunately, my customer is not a wealthy man, more of a senior on a fixed income kind of guy. (He had two bolts holding a scratched Faceplate on his PL400). I still...

I know we all get tired of reading these type of posts, but... Having checked all the usual sources, eBay, Craigslist, Audio Mart, Reverb, Audiokarma, etc. I have had no luck finding a pair of PL400 VU Meters. If anyone has a pair (of meters) I need them for a customer's PL400. They can be...

Blaze, you "could" share a link for those of us that are not so good at searching the videos on You Tube...

I don't know the cost of a Rolls SX95, it seems very complicated if you just want to bridge two channels of a stereo amp for a single output to feed a subwoofer. Phase Linear recommends a small metal enclosure to prevent any environmental noise and it could be handy to install Input and Output...

Our source for Phase Linear components is: https://www.whiteoakaudio.com/estore.aspx But many of the technicians here carry parts such as the output transistors.

Will they replace it at no charge? I blew a 18" CV Musical Instrument Speaker (likely old age) that was doing duty in an Acoustic 301 Folded Horn Cabinet. I set it on the counter at CV (3762 S. Hill St. Los Angeles, CA) and the girl working there took it and came back with a new or refurbished...

Of course, a side by side test of your upgraded SII 400 and the ML amplifiers will be required.

You can bridge the Phase Linear amplifiers, but you have to do it correctly. The 700B Owner's Manual says to never connect the outputs together! There was an undated Service Bulletin describing the technique for correctly "Bridging" the 400, 400 II, 700, 700B, and 700 II into 8 Ohms or greater...

Clipping the Model ONE. I knew if anybody could do it, it would be Lee.

Good catch, I did not see the Cylon meters in that picture. Still a bit slow down here in Florida...

Regarding the Capacitor hold down plate. I recommend you flip it over so the notch is closer to the top of the amplifier. I had to do this on mine in order for the Meter stud to clear the hold down plate. Depending on your Meter manufacturer, it may clear regardless, but that is what the notch...

A very rare unit indeed. Phase Linear 7000 Cassette Deck. Same as a Pioneer CT-A1 and introduced after Pioneer took over in 1980. Made for three years in Japan.

If I was you... I would upgrade the PL400 first. It is a much simpler amplifier and the upgrade is less costly. You will learn so much and this learning will assist you if you decide to upgrade the PL700 amplifier. The sound of those upgraded PL400 amplifiers is magical. You will not regret...

The later PL400 amps had 8 Fins, started in 1975, I believe. The last Series I PL400 was assembled sometime in 1978.

Does the "D" in DTS mean Delco?

I recently had a customer that wanted some upgrades to his PL400. He shared this Receipt/Invoice for service from Dean dated May 23, 2004 for another PL400 he still has. And it had the same problem, but now upgraded with WOA Control Board, WOA Capacitor Kit, New Output Transistors, and a few...

Avoid electrolytic caps when a Polypropylene or other high quality film cap can be found to fit with the same specs. The PL2000S2 BOM is good, but I sourced my PL2000 parts from Mouser.

The DBT identifies high current loads (shorts) in the Primary Power and to a lesser extent, downstream. Crossing output wires shows the amplifier an impedance of 0 Ohms and the amplifier will generate all the available Power across that short circuit - damage ensues. Many times the damage cannot...

George, what is the sensitivity of the Phono input in your preamplifier?