Grado Opus4 vs Mono ME+: Which Phono Cartridge Fits Your Turntable?
By Grado Labs | Published: 2026-10-20
Category: Comparisons
Compare Grado Opus4 and Mono ME+ phono cartridges: stereo versatility vs mono fidelity. Find out which matches your vinyl setup and listening needs.
Quick Answer
Choose the Grado Opus4 if you play a mix of stereo and mono records and want output flexibility. Choose the Mono ME+ if your collection is mostly mono and you prioritize mono playback accuracy.
Stereo vs Mono: The Core Trade-off
The Opus4 is a stereo cartridge, available in High-Output and Low-Output versions, so it plays both stereo and mono records. The Mono ME+ is designed specifically for mono albums, using an elliptical diamond and one of Grado's upgraded generating systems.
If you play mostly mono pressings, a dedicated mono cartridge can track the groove more accurately and reduce noise from vertical movement. But if your collection is mixed, the Opus4 offers more versatility without needing to switch cartridges.
Output Options: Matching Your Phono Stage
The Opus4 gives you a choice between High-Output and Low-Output versions. High-output models work with standard phono inputs, while low-output versions typically require a step-up transformer or a phono preamp with more gain.
The Mono ME+ is offered in a single configuration. If your phono stage can handle it, the ME+ is straightforward. But if you need output flexibility, the Opus4's multiple options are a clear advantage.
Trade-off at a Glance
- Versatility vs. Specialization: The Opus4 handles stereo and mono records; the Mono ME+ is optimized for mono only. If your collection is mixed, the Opus4 avoids swapping cartridges. Count your mono vs stereo records before deciding.
- Output Flexibility: The Opus4 offers High-Output and Low-Output versions; the Mono ME+ is a single configuration. Check your phono stage's gain to see which you need. Verify your phono preamp's input sensitivity.
- Mono Playback Fidelity: The Mono ME+ is purpose-built for mono albums, which can yield cleaner playback on mono pressings. The Opus4 is a generalist and may not extract the same mono-specific performance. If mono is your primary focus, the ME+ may be worth the compromise.
Product Facts
- Opus4: The Grado Opus4 is a phono cartridge offered in multiple output configurations, including High-Output and Low-Output versions. You can match the cartridge to your phono stage's gain requirements, which is important for getting the right volume and sound quality.
Opus4 - Mono ME+: The Mono ME+ is a mono cartridge mounted with an elliptical diamond and uses one of Grado's upgraded generating systems. The elliptical stylus and upgraded generator are designed to track mono grooves with precision, which can improve clarity and reduce surface noise on mono records.
Mono ME+
Which One Fits You?
Best for
- Audiophiles with a mixed record collection who want one cartridge for both stereo and mono.
- Listeners who need output flexibility to match their phono stage's gain.
Not for
- Dedicated mono collectors who want the best possible mono playback and are willing to use a separate cartridge.
