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Arthur Loesch 1.1 Control Preamplifier

Vintage Loesch-Designed Amplifier After Updates

Do you have an Arthur Loesch, DIY Loesch, or other Loesch-designed amplifier or preamp that was fabricated by another maker and is 10, 15, or 20 years old? We've made several circuit changes over the years and can bring your vintage gear up to date (or reasonably close). In addition to modifying the circuit, we can also perform the following:
  • Upgrade capacitors and resistors to match or approximate those in our new units
  • Test and replace aging tubes
  • Upgrade the RCA sockets and binding posts
  • Shorten the signal path, wherever possible
  • Replace the original signal path wire with Teflon-jacketed pure silver wire
  • Replace the fixed power cord with an IEC connector
An example of an updated Loesch-designed amplifier is shown above and below.
 
Updated Amplifier
Vintage Loesch-Designed Amplifier : After Parts and Circuit Updates
 
Updated Preamplifier
Vintage Loesch-Designed Preamplifier (Detail) : After Parts and Circuit Updates

If you have an original GenRad 1201A, 1201B, or 1201C power supply for your preamp, we can take it apart and replace all of the old caps and resistors with modern, 1% matches. Those PSUs date from the 1950s and their components often deviate from their stated values by up to 20%. We can also rewire it with larger gauge, color-coded, Teflon-insulated leads.
 
GenRad 1201B Power Supply Board : Before
Original GenRad 1201B Power Supply Board
 
GenRad 1201B Power Supply Board : After
GenRad 1201B Power Supply Board : After Parts Updates
 
GenRad 1201B with upgraded capacitors, new wire, and restored PC board
GenRad 1201B with upgraded capacitors, new wire, and restored PC board

Prices vary with the work required and can be tailored to fit your budget. or give us a call for more information and a free estimate.

Tempo Electric LLC
PO Box 770
Saratoga Springs, NY 12866-0770
USA
+01 (518) 542-7004
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