HA-2SF vs Unison Research SH
The SH's output impedance is 6.9Ω against the HA-2SF's 32Ω, its input sensitivity 0.7V RMS against 1.0V RMS, its weight 6 kg (13 lbs) against 9 kg (20 lbs), and its depth 322 mm against 350 mm.
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Estimated price (community-sourced)
Around — community and catalog average, updates slowly
The HA-2SF features a single-ended topology with a maximum output power of 2W. It includes a 4-pin XLR balanced output and a 6.3mm single-ended headphone output, along with two VU meters for visual feedback. The amplifier uses ECC82 and ECC99 tubes and offers 2 RCA and 1 XLR balanced inputs. It can also function as a pre-amp for home systems.
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
Components that show up alongside the HA-2SF in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The SH's output impedance is 6.9Ω against the HA-2SF's 32Ω, its input sensitivity 0.7V RMS against 1.0V RMS, its weight 6 kg (13 lbs) against 9 kg (20 lbs), and its depth 322 mm against 350 mm.
The Custom EL84 SE's power @ 8ω is 2.3W against the HA-2SF's 2W, its output impedance 8Ω against 32Ω, its input sensitivity 2.0V RMS against 1.0V RMS, and its weight 13.15 kg (29 lbs) against 9 kg (20 lbs).
The Soloist GT4's power @ 8ω is 5W against the HA-2SF's 2W, its output impedance 25Ω against 32Ω, its weight 5 kg (11 lbs) against 9 kg (20 lbs), and its width 255 mm against 300 mm.
Both turn up in the same documented systems.
The PA-One's power @ 8ω is 0.5W against the HA-2SF's 2W, its input sensitivity 0.3V RMS against 1.0V RMS, and its weight 7.5 kg (17 lbs) against 9 kg (20 lbs). Both share output impedance (32Ω).
Musical Fidelity A3.2 CR
Burson Audio Conductor Stellar
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