For my ET 2.5, I use a shop compressor located in my garage. I ran an air line to my listening room (standard NPT 1/4" fittings) that runs into a water trap/filter and into a precision low pressure regulator. From there I have a barb that fits standard fish tank air line that goes into the ET manifold. I also run the pneumatic actuators on my VPI TNT 4 thru another precision low pressure regulator. Oh, and also an air gun for dusting off a third regulator. Once set up, there isn’t much to worry about other than cleaning off the spindle periodically. I run the ET at around 12-15PSI most of the time. Going higher doesn’t seem to improve the sonics, and can be problematic, as the pressure escaping the manifold can sometimes blow the spindle assembly back off the runout groove.
Top linear trackers
I’m in the market soon for a linear tracking tonearm. Two in particular have piqued my interest, the Kuzma Airline with damping trough and the Bergmann Odin. From what I can tell, these designs have especially benefited from lessons learned during the evolution of linear tracking, incorporating features like longish tonearms to minimize warp wow, ultra low friction, low air turbulence, and mitigation of the high horizontal mass issue by use of a damping trough (not sure of the Odin on that). The Odin is known to have a very quiet pump. The lift on the Kuzma may be easier to operate. I would love to hear from anyone with long term experience with these arms or comparable other ones. I would be mounting this on my current VPI Classic 4 and most likely using my Soundsmith Sussoro Mark 2 ES. That cartridge should work with either arm based on the resonance calculations. Down the road I may consider moving the arm to a Sota Cosmos Eclipse or a Technics custom SP10R or another high value setup. I cannot afford the Bergmann Galder with Odin. If I could I probably would have reached the end of my journey.