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The Fusion 3502P is a high-performance stereo tube power amplifier from Black Ice Audio, originally developed under the Jolida brand. It features a redesigned circuit on a steel chassis with upgrades including ESA clarity coupling capacitors, high-speed diodes, and DC voltage to preamp tubes for reduced noise and enhanced clarity. Tube bias is switchable for 6550, KT88, KT120, KT150, or EL34 tubes. It can be used as a power amp with bypass functionality. Custom wound audio transformers with German grain-oriented silicon steel core support 4 or 8 ohm loads. Components include ALPS audio potentiometer and gold-plated RCA inputs. Jolida production ceased in 2017, and Black Ice Audio provides repair services but no technical support, remotes, or manuals for legacy gear. The Fusion line offers superior noise floor, tone, detail, bass, soundstage, and imaging compared to original Jolida products.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The JD-502A's output impedance is 8Ω against the (formerly Jolida) Fusion 3502P's 4Ω, its input sensitivity 0.6V RMS against 0.3V RMS, and its class AB against Tube. Both share power @ 8ω (85W).
The STP-80's power @ 8ω is 35W against the (formerly Jolida) Fusion 3502P's 85W and its input sensitivity 0.1V RMS against 0.3V RMS. Both share output impedance (4Ω) and class (Tube).
The JD-1000A's power @ 8ω is 100W against the (formerly Jolida) Fusion 3502P's 85W, its output impedance 8Ω against 4Ω, its input sensitivity 0.5V RMS against 0.3V RMS, and its class AB against Tube.
The Mark III's power @ 8ω is 60W against the (formerly Jolida) Fusion 3502P's 85W, its output impedance 8Ω against 4Ω, and its input sensitivity 1.5V RMS against 0.3V RMS. Both share class (Tube).
Audio Research Corporation Classic 30
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