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I hope you all have a Happy Easter with your families.

These have been requested by some members in the past so I designed these covers and had them fabricated. They are now in stock and will be added to the White Oak Audio eStore page in short order. If there is any demand, I can have the PL400 transistor covers fabricated as well. It is a shame...

I tripped over this article that provides a good, simple explanation of ground loops and why they occur, especially as relates to audio equipment. And how to fix them... Find and Eliminate Ground Loops - Circuit Cellar

Just passing this along to members that buy rubber feet from them...

Seattle hot spot "The Shop"

He contacted me off the Contact Page asking for Phase Linear information (2 times). He put a non-existent gmail email address in the information request which naturally bounces. If anyone knows him, please PM me. He does not appear to be a forum member. Thx Joe

White Oak Audio will be on vacation shutdown starting Saturday 8/12/23 and returning to action on late Friday 8/18/23. Enjoying some time with the grandkids before school starts up again. During that interval, expect delayed responses to any inquiries. Thank you for your patience. Joe

Hope you all have a Happy Easter and are enjoying family and friends. The weather here is pretty choice today, hoping yours it too.

The wack-a-doodle is at it again. Better hit up your Lowes or Home Depot for a pack before they are only available on the black market... Biden admin moving forward with light bulb bans in coming weeks (msn.com)

Opening up a poll to see what your preferences are on a thicker PL400 faceplate (3/16" instead of 1/8") with new meters. Meters are slightly larger than originals, backlit with slight parchment color meter scale.

Who wants a very nice looking Power Switch option for their PL400 Faceplate? Please vote...

phase linear 400 amplifier - electronics - by owner - sale (craigslist.org)

Without internet for a while. Neighbors giant oak tree fell root ball and all skimmed house, did some damage. Ripped off power and cable wiring and blocked driveway. Other than that, it was perfect day. NOT!!

I prepared this photo tutorial to guide you through the bridge snubbers on these amplifiers. PL400 amplifiers are easy as there is plenty of clearance. The PL700 amplifiers have less clearance all around so this provides the technique to be successful. Hope it helps you out.

May it be a good 2023 for all of you...cheers!

Enjoy Mark's humorous and instructional video creations: Build a DBT test device Phase Linear Tee Shirts PL400 assembling the backplanes Rev B PL400 Build the Rev D driver circuit PL400 Chassis gutting - begin backplane Rev B installation PL400 Continue installation of Rev B backplanes - power...

Here is a link to a complete teardown and rebuild of the Phase Linear 400 (.ppsx version): PL400 Complete Rebuild Slide Show Here is a link to a complete teardown and rebuild of the Phase Linear 400 (.pdf version): PL400 Complete Rebuild Slide Show

Popped up on CL and posting to any of you AR and KLH afficianados...no affiliation, just passing on the posts. KLH reel to reel recorder - electronics - by owner - sale (craigslist.org) AR turntable - electronics - by owner - sale (craigslist.org)

KLH Model Twenty-Four - electronics - by owner - sale (craigslist.org)

Just became available...easy soldering, 10 wire holes, 0.093" thick aluminum.