Dating hiwatt amplifiers
Sometime after founder Dave Reeves’ death, and a changing in hands of the company occurred, Hiwatt amps began using more "questionable" construction techniques.
These designs are easy to identify when the chassis is exposed because circuit boards were then used and the tube sockets were also placed onto the circuit board itself rather than being mounted directly to the metal chassis.
This attention to detail was also the primary reason why Hiwatt production was limited to only 40 amplifiers per month.
As a result, Hiwatts are much more scarce compared to Marshalls and obviously fewer musicians know about them due to their limited availability.
The transformers are set up so that the amp can be used with various line voltages around the world and speaker impedance can also be set to 4, 8, or 16 ohms with two speaker outputs wired in parallel.
Shopping for a Hiwatt DR103 today In the United States especially, Hiwatt Custom 100 DR103s can be found and bought at a tremendous value.
The Hiwatt DR103 design is also based around the use of four EL-34 power tubes and four 12AX7 preamp tubes.When Marshall amplifiers became wildly popular on the music scene in the mid 60’s, clone and copy makers soon followed with their own versions of the famous Marshall Super Lead design.