Boutique caps in oil... reliable?

@charles1dad Fantastic and good on for 12 years with same DAC, next year will be just ten for me. I too am interested in your thoughts after listening.

Erik - I run a bevy of Russian PIO in a heavily modified MC240 for 4 years, zero issues…. 

Well my applications are in speaker crossovers as well as line level high pass filters.

Right now I am prototyping a little switch that will let me:

1. Switch my HT preamp outs to my Luxman without my need to use the Luxman’s bypass switch
2. High pass all signals to the Luxman amp
3. Provide sub outs

The idea being to integrate my HT and subwoofer seamlessly with my 2 channel system. :) I will need 0.047 caps, relatively physically small so no Coke can sized caps here! :D

you might take a look at the Vandersteen high pass. There are 3 models in relatively small form factor boxes. As you go up the line cap quality improves. All have battery bias to keep the caps formed. I use a Teflon model w my Treo  / sub 3 system and the M7 amps have a built in HP filter. As i am sure you might surmise, beware creating a tanking circuit…. You can see a picture of some of the internals on the Vandy website.

Best to you - keep after the DIY projects, they sharpen the mind and tge ear.

• I was planning a DIY high pass but instead recently added a Marchand XM46 XLR Passive Line Level Balanced Crossover between my preamp/buffer and my amplifiers, which rolls off my main speakers at about 45Hz.  I cannot hear any noise or other ill effects from having the Marchand crossover in my system, but it does result in improved bass.

Thanks for the recommendations. The complexity for me is not the high pass filter. It’s a circuit that works on the AVR’s 12V trigger and lets me integrate the sub into both the Anthem AVR and Luxman Integrated.  I think I pretty much have it figured out, but need to shop for nice sounding caps to use.