DENON DA-305

Commentary

A universal tone arm designed by professional engineering while maintaining the performance and durability of the DA-302/DA-303/DA-304 broadcast tone arms adopted by NHK and other commercial broadcasting stations.

In order to maintain high sensitivity and high reliability over a long period of time, two miniature bearings are used for the horizontal rotating shaft and are protected by a double housing.
In addition, in order to stabilize the friction of the upper and lower rotating parts, an angular contact bearing with little friction change and a hardened pivot with precision polishing finish are used. In addition, the bearing part is protected by a special elastic body, making it extremely stable against vibration and impact from the outside.

A micrometer-type direct reading method is adopted for the needle pressure adjustment method.
The DA 305 is designed to display the needle pressure scale can be displayed in two places in consideration of compatible cartridges. The black scale on the arm support side is used for cartridges with a weight of up to 9.5g, and the orange scale is used for cartridges with a weight range of 9.5g to 15g for easy identification.

For the lateral balance of the arm, the pipe is S-shaped for lateral balance, and resonance due to twist is suppressed.

4-channel use is also supported by using a low-capacity cord.

Gold plating is applied to all contact parts including the contact part of the 4P connector.

PCL-3 has been adopted for the head shell. By using special light alloy of 1.2 mm plate thickness, the shell weight is reduced while suppressing resonance.
In addition, since there is sufficient allowance for the long hole of the cartridge mounting screw, various cartridges can be mounted.

There was AL-1 as an arm lifter that is ideal for DA 305 as an option sold separately.
The AL-1 is an arm shaft mounted type with oil dump braking.

Model Rating

Type	Universal tone arm
Format	Static balance type
Arm length	347mm
Effective length	244mm
Offset Angle	21 ° (1973 catalog) 20.5 ° (listed in 1978 catalog)
Overhang	14mm
Tracking error	Within ± 2 ° (According to 1973 catalog) Maximum 2.5 degrees (listed in the 1978 catalog)
Needle pressure adjustment range	0 ~ 3g, 0.2g step
Applicable Cartridge Dead Weight Range	4g ~ 15g
Height adjustment range	35 mm ~ 70 mm (listed in the 1973 catalog) 35 mm ~ 75 mm (listed in 1978 catalog)
Attached shell	PCL-3
Shell dead weight	About 8.5g
Shell connector	EIA standard 4P connector
Mountable Board Thickness	5 ~ 30 mm, Washer φ 33 mm
Output code	Low capacity cord with 5P connector, 1.2m
Sold Separately : Arm Lifter AL-1 (¥ 2,500)
Format	Arm shaft mount type
Braking system	Oil dump braking
Attachable Shaft Dimensions	15 φ