Sound City valve amps include:
Sound City 50 Plus 2 X EL34 valve output
Sound City Concorde also 2 X EL34 valve output
Sound City 100 head with 4 X EL34 valve output stage.
Sound City 120 head with 6 X EL34 valve output stage.
The original mains and output transformers are very good quality 'Partridge Transformers'
The valve pre amp stages are quite unique especially with the 120 watt head.