Dating sound city amps
– Hiwatt DR103 All Purpose 100W heads with Mullard 4x EL34 power tubes and 4x ECC83 pre-amp tubes.
Controls for normal volume, brilliance volume, bass, middle, treble, presence and master.
David had over ten Hiwatt heads on the Dark Side of the Moon tours in 1973-75 and he always performed soundcheck on them all himself to make sure they sounded right.
Two main heads powered four 4×12” WEM speaker cabinets while the third head was a spare.
David’s Hiwatt settings (2006): linked input (upper normal and lower bright, guitar into upper bright) normal , brilliance , bass , treble , middle , presence , master (o’clock) 1969 – 1972 One of the earliest known pictures of David with his Hiwatts dates from the Van Dike Club in Plymouth UK. It is not documented when he bought the amps but most likely sometime during July as the band was vacant for most of the month.
Dave Reeves, who had been working for Sound City between 1966-68, had started his own company called Hiwatt and by January 1969 he began making custom 100w heads for local musicians and bands like Jethro Tull and The Who are seen using Hiwatts in May later that year.