TYPE 91E
INTEGRATED AMPLIFIER
1
INTRODUCTION
TYPE 91E INTEGRATED AMPLIFIER
e Western Electric Type 91E is a Class A, single-ended (SE), integrated amplier for high-
delity audio reproduction. Listeners take advantage of more than double the conventional output
power of the Western Electric Type 300B tube. is powerful innovation was made possible by
patented SE circuit topology. e 91E was made for the Western Electric 300B to provide end
users the highest possible performance and quality.
IMPORTANT:
INSTALLATION OF REPLICA 300B TUBES
e 91E was designed for operation with Western Electric manufactured 300B electron tubes.
e application of non-original or replica type 300B tubes may result in weakened performance,
distorted sound, or unexpected behavior, potentially harming both the amplier and the tubes.
Western Electric takes no responsibility for damage caused by the application of replica 300B
electron tubes during operation. If, during an open customer service or repair case, damage caused
by the application of non-original 300B electron tubes is discovered by Western Electric or is
disclosed to Western Electric by the end user, the case will be determined closed and the product
warranty shall be vitiated. Such determinations are nal. See page 21 for full warranty policy.
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