EICO ST70; 2 output transformers and 1 power transformer set.
Specs:
OPT: Primary Impedance: 6.6K ohm (no UL tap, used 7591 in Pentode)
Secondary taps: 4, 8, 16 ohm
Each good for 40 watts
PT: Primary: 115VAC
Secondaries: A bunch, never considered. Thrown in as an extra.
All measured OK for resistance/continuity all primaries and secondaries. No open or shorted circuits.
All end bells pulled and glass beaded -ready for paint. Original hardware included in a bag.
Originally acquired for the OPTs for a P-P 300B project for an Oregon Triode Society build.
In John Atwood’s testing and measurement of vintage output transformers, these EICO ST70 OPTs were only bettered in BW and quality by Harmon Kardon Citation II transformers.
$130 shipped -CONUS only (they are heavy)
Specs:
OPT: Primary Impedance: 6.6K ohm (no UL tap, used 7591 in Pentode)
Secondary taps: 4, 8, 16 ohm
Each good for 40 watts
PT: Primary: 115VAC
Secondaries: A bunch, never considered. Thrown in as an extra.
All measured OK for resistance/continuity all primaries and secondaries. No open or shorted circuits.
All end bells pulled and glass beaded -ready for paint. Original hardware included in a bag.
Originally acquired for the OPTs for a P-P 300B project for an Oregon Triode Society build.
In John Atwood’s testing and measurement of vintage output transformers, these EICO ST70 OPTs were only bettered in BW and quality by Harmon Kardon Citation II transformers.
$130 shipped -CONUS only (they are heavy)