Name: Denon - AU-320 / Passive Moving-Coil (MC) Phono Step-Up Transformer Preamplifier
Brand: Denon

Matthew McIvor

Hi-fi & Radio Auction

Stunning Denon AU-320, step-up transformer for MC phono cartridges.

Remarkably well preserved, in an aesthetic condition near mint. A vintage unit especially well cared for, aimed at vinyl and high-fidelity enthusiasts.

Technical specifications:

* Elevation ratio: 1:10 and 1:36
* Primary impedance: 3 Ω / 40 Ω
* Secondary impedance: 4 kΩ
* Bandwidth: 10 Hz to 100 kHz (±1 dB)
* Channel separation: 60 dB or more
* Phase shift: 10° maximum
* Triple magnetic shielding
* Gold-plated input and output terminals
* Low-capacitance output cord, about 1 m
* Dimensions: 97 × 65 × 155 mm
* Weight: about 800 g

Aesthetic condition: near mint, remarkable preservation.

An excellent Denon MC transformer, compatible with many moving-coil cartridges.


Superbe Denon AU-320, transformateur élévateur (Step-Up Transformer) destiné aux cellules phono MC.

Exemplaire remarquablement conservé, dans un état esthétique proche du neuf. Un appareil vintage particulièrement soigné, destiné aux amateurs de vinyle et de haute fidélité.

Caractéristiques techniques :

* Rapport d’élévation : 1:10 et 1:36
* Impédance primaire : 3 Ω / 40 Ω
* Impédance secondaire : 4 kΩ
* Bande passante : 10 Hz à 100 kHz (±1 dB)
* Séparation des canaux : 60 dB ou plus
* Déphasage : 10° maximum
* Triple blindage magnétique
* Bornes d’entrée et de sortie plaquées or
* Cordon de sortie basse capacité, environ 1 m
* Dimensions : 97 × 65 × 155 mm
* Poids : environ 800 g

État esthétique : proche du neuf, conservation remarquable.

Un excellent transformateur MC Denon, compatible avec de nombreuses cellules à bobine mobile.


Our expert provides this estimate to guide you when you’re bidding. It’s based on expected demand and the unique characteristics of the object, like quality, rarity, or ownership history. We can’t guarantee the object will sell, resell or be appraised for this amount.

Denon - AU-320 / Passive Moving-Coil (MC) Phono Step-Up Transformer Preamplifier

Excellent - Number of items: 1 - Including: Preamplifier - No extra's

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The Denon AU-320 passive moving-coil phono step-up transformer was manufactured in 2000, is in excellent physical condition and has been tested and is working.

Denon - AU-320 / Passive Moving-Coil (MC) Phono Step-Up Transformer Preamplifier

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The Denon AU-320 passive moving-coil phono step-up transformer was manufactured in 2000, is in excellent physical condition and has been tested and is working.

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