We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black cartridge alignment protractor for 222 to 250 mm tonearms

Audio-Technica

Audio-Technica AT-CAP1 Cartridge Alignment Protractor Black 222-250mm

SKU CH-21VV-2HN2Q MPN AT-CAP1

Sets cartridge offset and null points with the Baerwald method for tonearms 222 to 250 mm

  • Accessory categoryCartridge Alignment Protractor
  • Product colorBlack
  • HighlightsProtractor uses the common Baerwald alignment method to set
  • Accurate cartridge setup using the Baerwald alignment method
  • Minimises distortion through precise offset-angle and null-point adjustment
  • Ensures optimal tracking for peak cartridge performance
  • Fits tonearms with 222 mm to 250 mm effective length
  • Compatible with 8.7 in to 9.8 in tonearm spans

Cartridge Alignment Protractor

The Audio-Technica AT-CAP1 is a cartridge alignment protractor designed for turntable owners. It uses the common Baerwald alignment method to set a phono cartridge's offset angle and null points. Proper alignment is critical for peak cartridge performance, providing optimal tracking and minimizing distortion.

Vinyl listeners with compatible tonearms

This protractor suits users with tonearms that have an effective length between 222 mm (8.7") and 250 mm (9.8"). Builders whose tonearms fall outside this range should look at something else. It is not for digital audio users or those who do not adjust their own cartridges.

222 mm to 250 mm effective length range

The single specification that decides fit is the tonearm effective length window of 222 mm to 250 mm. Verify your tonearm's effective length before purchase. If it sits within this window, the protractor will let you set the correct Baerwald geometry.

How it compares

Measured against everything we stock in Record Players & Phono Cartridges, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 98% of the 456 comparable items (median $222.99).

Specifications

Product
Brand nameAudio-Technica
Model nameAT-CAP1
Product colorBlack
Accessory categoryCartridge Alignment Protractor
Size & build
Shipping weight0.07 kg
Package size71 × 25 × 2 mm

Questions about this item

How do I verify the AT-CAP1 is giving correct Baerwald alignment after setup?

Place the protractor on the platter, set the cartridge so the stylus rests on both null points printed for the 222 mm to 250 mm tonearm range, and confirm the cantilever lines up with the grid lines at each point.

What is included with the AT-CAP1 and what must I supply?

The box contains the black Baerwald alignment protractor only; you must provide the turntable, tonearm, cartridge, and any tools needed to adjust the cartridge mounting screws.

Which tonearm effective lengths does the AT-CAP1 protractor cover?

The protractor is calibrated for tonearms with an effective length between 222 mm (8.7") and 250 mm (9.8"), covering the common range for many modern tonearms.

More in Record Players & Phono Cartridges

Similar items