Audio/Video Inputs

• The Denon AVR-1601, predating High Definition Multimedia Interface (HDMI), is missing this important input option. Although this isn't a fault of the unit or the manufacturer, it is potentially a problem if you want to choose this receiver for a modern home-theater setup. Additionally, the unit only has two digital audio inputs. The receiver also lacks component video inputs, the base-level video connection type for high-definition.
  
  

Spring Terminal Speaker Inputs

• Recognized as a cheaper speaker wire terminal option, the Denon AVR-1601's surround and front speaker "B" terminals use spring terminals in lieu of binding posts. Spring terminals become loose over time and accept a maximum of 16-gauge speaker wire. Spring terminals also prevent a gas-tight connection between terminal and bare wire, hastening oxidation of the wire.
  
  

Resistor Problem

• Use of a 1/2-watt resistor at the power supply is known to occasionally cause problems with the receiver. A Denon 1601 with a faulty resistor will immediately shut off after pressing the power button, going into protection mode. Fortunately, authorized Denon techs and many retailers are aware of the issue, facilitating a quick repair turnaround.
  
  

Captive Power Cord

• Captive power cords prevent disconnection of the cord if the unit must be removed or repositioned. Additionally, it prevents upgrading of the cord, an important consideration for many audiophiles.