What gear are you using with your B1 Korg?

My B1 Korg was built as a two-box set using a Naim NAC 62 chassis & main board with a HiCap power supply. In rotation with a Naim NAC 82 preamp with diy Dual HiCap DR power supply. Source is a Naim CDX2 CD player with diy XPS DR power supply. Power amps are various First Watt clones, mainly M2x and Aleph J, and ongoing ACA experimentations. F6 clone and other beastly amps to follow.
 
M2X, ACA, Aleph J and soon to be also an FW J2 - all Mosfet or SITS.

Hiraga "Le Monstre" BJT amp.

Fed from a tube output Advance Acoustic, stereo 1 disc CD player source.

Speakers are absolute mint and original Yamaha NS1000 in Rosewood finish.
 
My humble build is still going strong months later.

Currently using it as headphone buffer for highly efficient Sony Z1R headphones with headphone jack, or to a 300b amp driving transformer for Stax headphones.

Also, when 300b outputs are switched to speakers, driving Audio Nirvana 12 inch full range drivers on baffle in a small room.
 
I'm using mine with a recently built version of Bonsai's KX class A power amp driving a pair of PMC FB1+ speakers. I have used a pair of Rothwell Audio in line attenuators so that I have some movement on the volume pot. Very pleased with the sound.
 
I built 2. The first one is fed by an echo dot or CD player and drives an very old pair of Bose roommate speakers. The second one is fed by a turntable/or digital source and going into an Aleph J; this is in my living room. They both sound GREAT!