At this point, I am absolutely blown away by the Soloist GT4 paired with the Fusion Core power supply—it’s truly a game changer. The sound quality is nothing short of incredible, and it’s honestly the best I’ve ever heard. Whether it’s music or my sim racing audio (car engines, tire screeches, etc.), everything has a level of detail and clarity that I didn’t think was possible. It’s an immersive experience like no other. I’m also working on tidying up my cable management, so it’ll look even better soon!
That said, I did notice one issue. When I was disconnecting the XLR cable between the HD800S and the Burson amp, I was surprised by how much force was needed to unplug it. No matter how I gripped the connector or pressed the release lever, it felt as though something was preventing a smooth disconnection. It actually seemed like the entire module was about to pull out of the amp with the cable. While this is a minor concern, I wanted to mention it, as it did leave me a little worried. Other than that, everything has been fantastic, and I’m absolutely thrilled with the performance.
Matching notes: At 300 Ω and 102 dB/V, the HD 800 S is a high-impedance load that needs voltage more than current: about 2.5 V (21 mW, 8.4 mA) for 110 dB SPL (calc.). Burson rates the Soloist GT4 at 1.3 W (XLR) / 0.65 W (SE) into 300 Ω, which is about 19.7 V / 14.0 V RMS (calc.), roughly 18 dB / 15 dB more than that. The Soloist GT4’s 0.5 Ω headphone output impedance is 1/600 of the load. [2] [3] [4]
Specs from manufacturer data unless a source below says otherwise. “calc.” values are worked out from those figures (V = √(P × R); 110 dB SPL used as a loud reference level). Gear listed without specs is not in our spec library yet.
