No.7

No.7 is a pre-amplifier with 6 inputs. One switched input selects the integrated phono- stage. Three outputs are available.
Two RCA- cinch and one XLR balanced output is serial standard.
All control functions of No.7 operate through microprocessor controlled gas contact relays with gold plated contacts. This results no loss of musical details at this important point. The No.7 uses a finely matched ALPS potentiometer with a channel balance of less than 0.3 dB. The use of 1% metal film resistors together with the finest WIMA MKP 10 polypropylene capacitors with a minimal 1% tolerance in the phono- stage are standard for Lua's No.7.
Notwith- standing its affordable price, the No.7 represents a genuine entry into Top High End vacuum tube electronics.
The integrated phono preamplifier is built to the same demanding standards as the main No.7 amplifier.
Considered by many critics to be the finest, most tonally neutral tube phono section currently available, its design goal was to precisely track the prescribed RIAA equalization curves with absolute accuracy. The No.7 reaches this goal with ≤ 0.2 dB. Its supremely quiet high gain circuitry has been designed with tubes for the MM section and JFET-’s for the MC- section, to deliver extra-ordinary performance for the broadest possible range of moving coil and
moving magnetic cartridges. The No.7 version represents a big step ahead, with its frequency range from 5Hz- 200 kHz and lowest distortion down to 0,0009 %, using double layer polypropylene capacitors, selected together with a tolerance of less ≤ 0.5 % as coupling capacitors. The finest custom manufactured and selected Lua tubes provide the No.7 with its characteristic sonic quality. Through meticulous engineering, careful specification of only finest available component parts and a painstaking attention to construction quality, we have created what we feel is a preamplifier system withoutrival in its price class.