A23 SUT for Denon 103
Auditorium 23Estimated price (community-sourced)
About the A23 SUT for Denon 103
The Auditorium 23 A23 SUT is a specialized step-up transformer created by Keith Aschenbrenner to complement the Denon DL-103 MC cartridge. It offers a voltage gain of approximately 20:1 and loads the DL-103 at about 118 ohms, optimizing the cartridge's output for standard phono preamps. The transformer is known for refining the sound of the DL-103 by maintaining its robust bass and weight while enhancing the clarity, precision, and transparency of the midrange and treble. It is praised for producing a crystalline sound with greater detail and a polished treble, making vinyl playback more vivid and lifelike. The A23 SUT is considered a must-have for audiophiles using the Denon 103 or similar low-output MC cartridges, delivering a more refined and dynamic listening experience compared to typical step-up devices.
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