Features Overview

opto 7

1:1 circuit of the 1968 LA2A schematic 

all connections are through shielded  sma cables - essentially no soldering wires in this design 

front panel pcb makes wiring the entire front panel audio / metering and limiting controls a snap.

designed for sowter or lundahl audio transformers ( will work with any applicable transformers rated for the circuit if mounted off board)

option to hard wire individual controls to the pcb or use sma cables for most connections  (metering is connected through a ribbon cable to the control pcb)

comes with tube regulated power supply and dc heaters for ultra quiet operation.