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Low-Mass Tonearm

review this tonearm (4 reviews)

Low cost version of the LMF-1 tonearm. Comes fitted with an aluminium arm tube (instead of carbon fibre) and detachable headshell.

adc alt-1 tonearm


The optional stabiliser base ASL-1 provides additional mass to help stabilise lightweight turntable bases, thus establishing a firm foundation for mounting the ALT-1 arm.

The ASL-1 replaces the nut normally used to secure the arm to the turntable base.

Special lead wires (CD4W) are required for CD-4 systems. They are also useful to audiophiles whose preamplifiers have a large input capacitance.

The removable head (LMH-1) allows the audiophile whose tastes require alternative phono cartridges to make premounted changes in seconds.


Pivot to stylus tip: 237mm

Offset angle: 24.6 degrees

Overhang: 19mm

Cue: lever control, viscous oil damped

Cartridge weight range: 4 to 11g

Stylus force range: calibrated 0 to 4g

Bearings: stainless steel ball bearings

Effective mass: 7.0g

Anti-skate range: 0 to 4g


A low cost tonearm sourced in Japan. Of about 8.5g effective mass, it will suit most medium compliance cartridges, but does not give a good sound by modern standards. Failings include a treble brashness or brittleness and lack of stereo precision, not helped by slack bearing adjustment - £44 HiFi Choice 1984


instruction/owners manual  English

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ADC ALT-1 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by ADC.