Price Paid:  $500.00

Summary:
amount of circuit i put into this.
(hand-made 4 way attenuator/nickel cored ringcore trans/all chasis 1cm durallumin etc..)
more than 6 months, i improved this.
now, i feel better and satisfiy with this.
the mood of it's sound is bright, accurate, and arranged.
especially it can display sound like 3d image. ^^
frankly, i had had little hope this to supress tube type preamp like marantz c7 type, and i failed as i supposed it might be...

at any rate, i spended about $500.
within the 1000$ pre-amplifier, this may be the best.
but comparing with nowadays high-cost(more than 5000$ class) pre, this may be classified in the mid-end-fi ^^

Strengths:
excellent image, clearity, focus, balance.
proper high tone, accurate and speedy low tone. etc

Weaknesses:
hard to make.
can't suppress the high tone of EIRIDICE single/push-pull, but can supress everage pre-amp within 1000$ in every aspect.

Similar Products Used:
audio research LS-2 MK II, EURIDICE(417 single), EURIDICE PushPull(417 p.p/Full Balance), BAT 3i/VK 50