Technics EPA-A501L System Arm Unit

Extremely rare EPA-A501L interchangeable arm unit for Technics EPA-500 system tonearm, which is from my personal collection and in pristine condition, with original storage/display case.

Arm unit is especially designed to provide optimum matching and, thereby, maximum performance of modern high specification magnetic and mainstream moving coil phono cartridges - usually 5.0 to 7.0 grams in weight and 5 to 7 cu dynamic compliance (typical tracking force of 1.7 ~ 2.2 g).

As a proud owner of a Technics EPA-500 tonearm, you will appreciate the exemplary engineering skill and expertise that has gone in to the creation of each version of these arm units.

Component details:

Type	Dynamic damping type arm unit
Arm pipe	Titanium Nitride (TiN) Taper Pipe, 9~11mm dia
Effective arm length	250mm
Arm rear length range	68 mm ~ 85.5 mm (from arm supporting point)
Overhang	15mm
Horizontal tracking error angle	+ 1 ° 6' (30 cm record inner circumference) + 2 ° 6' (30 cm record circumference)
Arm effective mass	18g (without cartridge)
Compatible Cartridge Weight	5g ~ 7g
Compatible Cartridge Compliance	5 ~ 7 x 10-6 cm/dyne (dynamic, 100 Hz)
Cartridge Mounting Dimensions	JIS Standard 12.7 mm (1/2inch) Mounting Interval
Shell terminal lug	Φ 1.2, 4-pin
* Technics cartridge compliance is a dynamic compliance measure. For quoted static compliance values of 25x10-6 cm/dyne or higher, a value of approximately 1/2 is equivalent to Technics' dynamic compliance.

Thank you for looking