Lamm Audio celebrated its 20th anniversary with the world premier of the LP1 Signature phono preamplifier ($32,790). It’s a monumental three chassis affair with two external power supplies – one per channel. Most of the complexity is in the power supplies which feature toroidal power transformers, tube rectification, and extensive voltage regulation. There are a total of three inputs, one MM and two MC with adjustable cartridge loadings. Designer Vladimir Lamm explained that in order to keep the signal path as simple as possible he opted for passive RIAA equalization to maintain the number of active gains stages at two. Both stages are single-ended Class A using Russian 6C3P (first stage) and 6C45P-E (second stage) triodes. No global feedback is used. The LP1 is engineered with excellent headroom reserve and current drive capability to accommodate long cable runs. Naturally, it’s a labor of love - only the best, and consequently very expensive components are deployed. Vladimir is particularly proud of this design and believes that it will hold up as a reference for the next 100 years!