I have the LL2 Deluxe version. Fantastic preamp. Can't comment on synergy of ARC and Lamm used in the review but this preamp is so good with other Lamm gear that it simply edged out a 3x more expensive Ayre KX-R in my own system for sheer musicality. A true bargain.

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System 7.1:
Wilson Sasha/Mezzo/Watch surrounds
D'Agostino Momentum x3 amps
Bryston 4B SST2 x2 amps
Krell S1200U pre/pro
Oppo Blu
Sony Blu changer
McIntosh MS300 music server
EAR/Yoshino Acute III tubed CDP
Transparent Ultra cabling
JL Audio F212 Sub
Lumagen video processor
JVC RS-35U projector
Stewart Screen