Single Ended - "Ultra Linear" to 75 Watts

  • "Over designed" for high fidelity, single ended, Class-A, tube output circuits (triode, tetrode or pentode tubes).
  • Enclosed (shielded), four slot, chassis Type "X" mounting.
  • Frequency response at least 20 Hz. to 20 Khz. at full rated power (+/- 1 db max., ref. 1 Khz.)
  • Insulated flexible leads 8" min.
  • For maximum versatility, all units (except the 1642SE & 1638SEA) include a 40% screen tap for Ultra-Linear, tetrode/pentode operation (if desired). The 1642SE & 1638SEA do NOT include this screen tap as they were designed principally for high impedance triode tubes. High quality laminations, (M6) grain oriented silicon steel.
  • Core is gapped to reduce core saturation in Class-A tube amplifier circuits.
  • For general purpose or replacement use in single ended tube output circuits see our 125SE series.


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