For years, the Pioneer DJM-900NXS2 has stood as a cornerstone in DJ booths worldwide. As a working DJ, I’ve spent countless hours behind this mixer, and recently, I had the chance to explore its successor, the DJM-A9. This isn’t a technical spec-dump; rather, it’s an honest appraisal of the DJM-900NXS2 from someone who uses this equipment in real-world scenarios, contrasting my long-term experience with the new features of the A9. If you’re after detailed specifications, Pioneer DJ’s official website is your best resource.
Pioneer DJM 900 Nexus 2 mixer positioned on the left compared to the Pioneer DJM A9 mixer on the right, showcasing size and layout differences for DJs.
Sound Quality: The Unmistakable Difference
Having spent a full day with students rigorously testing the DJM-900NXS2, the immediate switch to the DJM-A9 revealed a striking leap in sound fidelity. Even on studio monitors like KRK Rokit 5s, the improvement was undeniable. This immediately highlighted the enhanced audio processing in the newer model. If the sound difference was this pronounced on smaller speakers, the anticipation for experiencing it on a club sound system was immense. The DJM-900NXS2 has always been known for its clean sound, but the A9 elevates this to a new level, offering a richer, more dynamic audio experience.
Connectivity: USB-C, Bluetooth, and Beyond
The inclusion of a USB-C port alongside the standard USB-B on the DJM-A9 is a forward-thinking update, aligning with modern laptop connectivity. This eliminates the need for dongles and adapters, a welcome convenience for DJs on the move. Both the DJM-900NXS2 and A9 offer comprehensive channel connectivity including Line, Phono, Digital, and USB inputs, along with send/return options. However, the A9 introduces Bluetooth connectivity, a feature absent in the DJM-900NXS2. While Bluetooth might seem useful for home practice or casual listening, its practical application in a professional DJ setting, especially concerning latency for beatmatching, remains questionable. For club environments, the traditional wired connections of the DJM-900NXS2 remain robust and reliable.
Enhanced Microphone Inputs: Phantom Power and Dedicated FX
The microphone inputs on the DJM-A9 have received significant enhancements compared to the DJM-900NXS2. The addition of phantom power is a game-changer, enabling DJs to use studio-grade condenser microphones directly. Furthermore, dedicated microphone effects—Reverb, Echo, Pitch, and Megaphone—offer creative vocal processing possibilities. These mic FX can be combined with the standard beat FX, opening up exciting avenues for vocal performances and live remixing, a feature set that expands upon the more basic mic capabilities of the DJM-900NXS2.
Dual Headphone Outputs: A & B Monitoring
The inclusion of both A and B headphone outputs on the DJM-A9 is a practical addition for collaborative DJ sets. While the DJM-900NXS2 has a single headphone output, the dual outputs on the A9 streamline back-to-back performances, preventing awkward headphone sharing or accidental interruptions during mixing. This feature directly addresses a common practical need in DJing scenarios where smooth transitions and monitoring are paramount.
Color FX: Parameter Lock and Crush Effect Intensity
The Color FX section on the DJM-A9 introduces a center lock feature for the effect parameter, a useful addition for DJs who want controlled and precise effect application. While the DJM-900NXS2 allows for FX parameter control using the FX frequency knob, the lock on the A9 provides an extra layer of precision. However, the intensity of the Crush effect on the A9 seems significantly amplified compared to the DJM-900NXS2. This heightened intensity might require a more delicate touch, and some DJs might prefer the more nuanced Crush effect found on the 900NXS2. Additionally, the Sweep Gate effect present on the DJM-900NXS2 has been replaced on the A9, potentially altering workflows for DJs who relied on this specific effect combination with Beat FX.
Faders and EQs: Smoothness and Ergonomics
The faders and EQ knobs on the DJM-A9 feel exceptionally smooth, contributing to a refined mixing experience. While the long-term durability remains to be seen, the initial feel is premium. The EQ section benefits from increased spacing in the layout, making adjustments more comfortable and intuitive compared to the slightly more compact layout of the DJM-900NXS2. The Magvel Fader returns on the A9, a feature appreciated by scratch DJs, although its relevance to mixing styles varies. The addition of EQ settings for booth monitors on the A9 is a novel feature, but its practical necessity in typical DJ setups might be limited. The core functionality and feel of the faders and EQs remain top-tier, maintaining the professional standard expected from Pioneer DJ mixers.
Beat FX: Evolution and Creative Potential
One notable change in the Beat FX section of the DJM-A9 compared to the DJM-900NXS2 is the removal of the Slip Roll effect. While some DJs might miss this specific effect, the A9 introduces new and enhanced Beat FX, expanding creative possibilities. The larger screen on the A9 provides more detailed visual feedback for parameter adjustments, enhancing precision. The simplified X-Pad and dedicated channel select buttons for Send/Return workflows improve usability and control. The A9 retains many of the popular effects from the DJM-900NXS2 while adding innovative options like Mobius and the Triplet Filter. The Mobius effect, when combined with Color FX, can create unique sonic textures. The Triplet Filter stands out as a particularly inspiring addition, offering rhythmic modulation and dynamic filtering capabilities, showcasing the evolution of Beat FX in the DJM-A9.
Conclusion: The Enduring Appeal of the DJM-900NXS2
While the Pioneer DJM-A9 represents a step forward with enhanced sound quality, connectivity upgrades, and innovative features, the DJM-900NXS2 remains a highly relevant and powerful professional DJ mixer. Its robust build, industry-standard layout, and comprehensive feature set continue to make it a staple in DJ booths worldwide. The DJM-900NXS2 delivers exceptional performance and reliability, solidifying its position as a trusted tool for DJs of all genres. For DJs considering a professional-grade mixer, the Pioneer DJM-900NXS2 offers a proven and feature-rich solution that stands the test of time.
