Checkin in … still LOVE my SR-1a with HSA-1a … Definitely a unique headphone that provides lasting enjoyment beyond flavor of the month. Since I bought the combination when the HSA-1a first became available 2 years ago, I have made several tweaks to my chain (DAC, Preamp, Tubes). Every time the SR-1a has scaled up and improved and reflected every little tweak I made.
If you consider buying SR-1a and building a system around it, that’s definitely an approach to take you very close to the best possible listening experience on any personal listening device (excluding floor standing speakers); as long as you are fundamentally OK with the SR-1’s peculiar form factor.
I am currently listening (this is 4 hours non stop with the SR-1a) to Lloyd Cole - Antidepressant (just a great album!). Right before enjoyed a focused session with Verdi - MacBeth (Muti) - the magnificent stage offered by the SR1a works amazingly well with this material (further aided by the ability to tweak its shape with 2 Goodside plug-ins, see below).
My “guilty pleasure” setup for tonight consists of
Mac mini M1 - Audirvana Studio(*) - Wavedream Net - Wavedream Signature XLR - Woo Audio 3ES Elite (as preamp; tubes: Takatsuki 300B and 274B, RCA 5692 Red Base) - HSA-1a
(*) DLNA; 4 Plug-ins: DMGAudio Equilibrium, HG-2MS, Goodhertz Midside 3, CanOpener Studio 3
Biggest smile in the world, makes it easy to wait for the SR-X 9000 a while longer