Nagaoka MP-MONO
Complementary product
Overview
The Nagaoka MP-MONO, the world’s first to utilize Moving Permalloy technology in a mono configuration, is designed for enthusiasts seeking to rediscover the full richness of original recordings without the compromises inherent to traditional stereo cartridges. The result of Nagaoka’s renowned Japanese expertise, it combines technical innovation with respect for historical standards to deliver optimal playback of 33 and 45 rpm monophonic records.
Moving Permalloy Technical Innovation Adapted for Mono
The MP-MONO brings Nagaoka’s expertise in Moving Permalloy technology to the specialized field of monophonic playback. This hybrid approach combines the tracking precision of a moving coil cartridge with the ease of use of a moving magnet cartridge. The generator uses a tiny piece of mu-metal called “permalloy” fixed to the end of the cantilever, significantly reducing the moving mass. This design allows the stylus to follow the groove with remarkable accuracy, faithfully capturing the musical information engraved without unwanted vertical disturbances.
The aluminum alloy cantilever ensures an optimal balance between rigidity and lightness, while the compact body provides effective isolation from magnetic interference. This architecture generates a high output level of 4.0 mV, allowing direct connection to standard MM phono inputs without the need for additional amplification.
Modular Stylus System for Different Eras
One of the most thoughtful aspects of the MP-MONO is its modular approach to styli. The cartridge comes standard with a 0.7 mil elliptical diamond (0.4 × 0.7 mm), specially calibrated for mono microgroove records produced after 1958. This configuration is ideal for modern reissues and Beatles mono pressings, often referenced by collectors.
For older records (1948–1958), Nagaoka offers an optional 1 mil elliptical stylus (0.5 × 1.0 mm). This wider tip adheres to the standards of the era and enables optimal playback of historical cuts. The most specialized collectors can even opt for 1 mil or 1.5 mil conical styli, suitable for pre-war pressings that require 2 to 3 mil tips.
This modularity allows precise adaptation of playback according to the pressing’s era, optimizing both sound quality and record preservation. The replacement system also makes long-term cartridge maintenance easier.
Universal Compatibility with Stereo Systems
Despite its monophonic nature, the MP-MONO features four connection pins—an elegant technical solution that greatly simplifies integration. The mono signal is automatically duplicated to both left and right channels, eliminating the need for a mono switch or Y-adapters. This design allows plug & play installation on any standard stereo system, with no modification to existing wiring.
The cartridge adheres to standard impedance (47 kΩ) and offers a full frequency response from 20 to 20,000 Hz. Weighing 6.5 grams, it is compatible with most tonearms on the market, requiring a moderate tracking force of 1.5 to 2.0 grams depending on the stylus used.
Acoustic Benefits Specific to Mono Records
The fundamental advantage of the MP-MONO lies in its ability to eliminate the artifacts inherent in playing mono records with stereo cartridges. Conventional cartridges pick up both the horizontal (audio signal) and vertical (noise) movements of the stylus in the groove. On a mono record, these vertical movements generate surface noise, distortion, and the “groove pinch” effect.
The MP-MONO, designed to respond only to horizontal movements, delivers quieter and more accurate playback. This approach reveals hidden details in mono recordings, offering clarity and definition impossible to achieve with a standard stereo cartridge. Collectors report a noticeable improvement in dynamics and a significant reduction in background noise.
Technical Specifications
Audio Performance
- Output level: 4.0 mV
- Frequency response: 20 to 20,000 Hz
- Channel separation: 20 dB (1 kHz)
- Impedance: 47 kΩ
Physical Construction
- Cantilever: aluminum alloy
- Stylus tip: 0.010 × 0.018 mm bonded
Usage Parameters
- Recommended tracking force: 1.5 to 2.0 g
- Cartridge weight: 6.5 g
Frequently Asked Questions
Why choose a mono cartridge instead of a stereo cartridge for playing mono records?
Stereo cartridges pick up unwanted vertical movements present in mono grooves, generating surface noise and distortion. The MP-MONO, specifically designed for horizontal signals, eliminates these artifacts and reveals the true quality of monophonic recordings.
How do I choose between the 0.7 mil and 1 mil styli offered as options?
The 0.7 mil stylus is suitable for modern pressings and reissues (post-1958), while the 1 mil is better suited for original records from 1948–1958. For pre-war pressings, wider styli are recommended.
Does the MP-MONO require any special adjustments on my system?
No, it connects like a standard MM cartridge to the corresponding phono input. Its four pins allow direct installation without a mono switch or adapter, as the signal is automatically duplicated to both channels.
- Eco-contribution included in the sale price.
- GTIN / EAN: 4967736083126
