Grado Headphone Cable Termination: XLR vs Phono Plug

By Grado Labs | Published: 2026-10-14

Category: How-to Guides

Learn how to terminate a Grado headphone cable with XLR or phono plug, and how to choose between balanced and single-ended connections for your setup.

Quick answer

Terminating a Grado headphone cable with XLR gives you a balanced connection that can lower noise and improve channel separation on compatible gear. If your amp only has a phono plug input, stick with a standard single-ended cable or use an XLR-to-phono adapter cable. Grado's own termination option places XLR male and female connectors inline a few inches above the phono plug, so you can use the cable either way without rewiring.

Why termination matters for Grado headphones

The connector at the end of your headphone cable determines whether you can run balanced or single-ended. Balanced wiring uses separate ground paths for left and right, which can reduce crosstalk and noise on long cable runs. Single-ended wiring shares a common ground and works with virtually every headphone jack. Grado's inline XLR option adds male and female XLR connectors a few inches above the phono plug, so the same cable can feed a balanced amp or a standard 1/4-inch jack. That flexibility is useful if you own both types of gear or plan to upgrade later.

Check your amplifier's output before you terminate

Not every headphone amp has a balanced output. A true balanced output requires separate amplification circuits for each channel and a four-pin XLR or dual three-pin XLR jacks. If your amp only has a 1/4-inch or 3.5mm jack, it is single-ended, and an XLR plug will not unlock balanced operation. Some amps offer both; check the rear panel or manual. If you are unsure, use the phono plug end of Grado's inline XLR cable and leave the XLR connectors unused. That way you are not locked into one format.

Choose the right connector for your chain

For a balanced chain, you need a four-pin XLR or two three-pin XLR connectors, depending on your amp. Grado's termination option uses XLR male and female connectors inline, which means you can plug into either a male or female XLR output without an adapter. For a single-ended chain, the standard phono plug works with any 1/4-inch jack. If you want to use a balanced amp but keep a single-ended backup, the inline XLR design lets you switch by moving the plug, not rewiring the cable.

Common mistakes to avoid

Do not assume an XLR connector automatically means balanced audio. Some devices use XLR for single-ended signals. Also, never plug a balanced XLR output into a single-ended input with a passive adapter unless the adapter is specifically wired for that purpose; it can short the negative signal and damage the amp. Finally, do not cut or reterminate a Grado cable yourself unless you are experienced with soldering and multimeter testing. A poor solder joint can cause intermittent channel dropouts.

Step-by-step: terminating your Grado cable

Identify your amp's output type: Look at the headphone output on your amplifier. A 1/4-inch or 3.5mm jack is single-ended. A four-pin XLR or dual three-pin XLR is balanced. If you see both, you can use either. Checkpoint: If you only have a 1/4-inch jack, you do not need XLR termination for balanced operation.
Decide between XLR and phono plug: For balanced amps, choose XLR termination. For single-ended amps, choose a phono plug. If you want both, Grado's inline XLR option gives you XLR male and female connectors a few inches above the phono plug. Checkpoint: The inline design means you can use the cable either way without rewiring.
Match connector gender to your amp: Some balanced amps have a male XLR output, others female. Grado's inline option includes both male and female XLR connectors, so you can connect to either without an adapter. Checkpoint: Never force a connector. If it does not seat easily, you have the wrong gender or a damaged plug.
Test for channel balance and noise: Plug in, play a familiar track, and listen for left-right balance and background hiss. Balanced connections should be silent at high volume with no music playing. Checkpoint: If you hear hum or one channel is weaker, power down and check the connector seating.
Secure the cable during transport: Inline XLR connectors add weight and bulk near the plug. Coil the cable loosely and store it in a hard-shell case to prevent strain on the solder joints. Checkpoint: A case like the Large Hard-Shell Case for Grado Headphones fits G-cushion models and protects the termination.

Grado cable and accessory facts

Terminate cable with XLR - XLR male and female connectors are inserted inline a few inches above the phono plug, so you can use it either way.: Terminate cable with XLR - XLR male and female connectors are inserted inline a few inches above the phono plug, so you can use it either way. This lets you run balanced XLR or standard phono from the same cable, so you can move between amps without buying a second cable.
Grado Headphone Replacement S-Cushions: Grado Headphone Replacement S-Cushions are consumer replaceable genuine Grado ear cushions. Standard equipment on SR60, SR80, SR125. Also fits all Prestige, Reference, Statement, Professional and Limited Edition Headphones. If you are swapping cables or doing maintenance, fresh cushions restore comfort and sound without affecting termination.
Large Hard-Shell Case for Grado Headphones: Large Hard-Shell Case for Grado Headphones fits PS1000e, PS2000e, GS1000e, GS2000e, GS3000e, RS1e. Note: This is the correct case for any headphone with G-cushions. A hard case protects the cable and connectors during transport, especially important with inline XLR plugs that add bulk.