Sennheiser HD 650 Headphone Monitoring Kit with Grace Design m900 DAC and Amp

High-Fidelity Reference Monitoring Solution for Mixing, Mastering, and Audiophile Listening

This professional headphone monitoring bundle from B&H pairs the Sennheiser HD 650 stereo reference headphones with the Grace Design m900 compact headphone amp, DAC, and preamp. Built for audio professionals and serious music lovers, this turnkey monitoring system delivers transparent, high-resolution sound ideal for critical listening, mixing, mastering, or simply enjoying music with absolute detail.

Sennheiser HD 650 Open-Back Stereo Reference Headphones

The Sennheiser HD 650 is a trusted choice among studio engineers and audiophiles seeking neutral, open-back headphones that offer exceptional clarity and natural sound reproduction. Designed with a wide frequency response from 10 Hz to 39.5 kHz, these headphones present music with precision across the full spectrum, from deep lows to sparkling highs.

Each pair of HD 650 headphones is carefully matched within a narrow ±1 dB tolerance to ensure consistent stereo imaging and accurate performance. Special acoustic silk inside the earcups provides uniform attenuation, while the lightweight aluminum voice coils deliver fast transient response and excellent dynamics.

Comfort is key during long sessions, and the elliptical earcup design naturally contours to your ears for a secure yet breathable fit. The headphones feature a detachable 9.8-foot OFC copper cable, known for low handling noise and superb conductivity, and include a 1/4-inch to 3.5mm adapter for flexible connectivity.

The HD 650 performs exceptionally well with high-end hi-fi systems, including SACD, DVD-A, and CD players, and scales beautifully when paired with a dedicated headphone amplifier.

Grace Design m900 Compact Headphone Amp, DAC, and Preamp

The Grace Design m900 is a portable headphone amplifier and digital-to-analog converter built for discerning listeners who demand pristine playback in any environment. Despite its compact size, the m900 uses the latest AKM 4490 DAC chip with 32-bit resolution and support for up to 384 kHz PCM and DSD256 formats, making it ideal for high-resolution audio playback.

Designed for desktop and mobile DAW setups, the m900 features USB, S/PDIF, and TOSLINK digital inputs, giving you full control over how you monitor your sound. Its asynchronous USB mode eliminates jitter, while RCA outputs allow you to connect to powered speakers for a full monitoring system.

To accommodate different headphone types, the m900 includes low and high power operation modes. It runs on USB bus power for simple setups or uses the included 2A USB power supply for higher impedance headphones like the HD 650.

Its zero-ohm output impedance headphone drivers deliver clean, spacious sound with tight low end, while the built-in crossfeed circuit emulates a natural speaker-like environment in headphones, making long listening sessions more immersive and less fatiguing.

An easy-to-read 7-segment LED display, large volume knob, and customizable DAC filter settings give users full control of their listening experience. Built in the USA, the m900 also comes with a 5-year transferable warranty.

A Premium Monitoring Setup for Serious Audio Work

The combination of the Sennheiser HD 650 and Grace Design m900 delivers reference-quality monitoring with unmatched clarity and comfort. This bundle is ideal for studio engineers, producers, mastering specialists, or any audiophile seeking high-fidelity sound in a compact and reliable setup.

Whether you're mixing tracks, evaluating detailed recordings, or simply enjoying high-resolution audio, this system ensures every nuance is heard exactly as it was intended.