Rodrigo’s Burson V5i Opamp with HiFiMAN EF5

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Sales Burson
July 4, 2017

Post Info

Feedbacks - V5i SS Opamp
ODAC

Replaced stock op-amp OP275 and LME49720. Improved stereo separation and clarity. Stereo-imaging improved. Recomended!

The System

Listening with

HiFiMAN EF5 · Headphone amp: hybrid tube (12AU7) / opamp (OP275) headphone amp with external PSU · discontinued

Frequency response: 20 Hz – 30 kHz
Output impedance: 2 Ω (headphone, as listed)
Gain: high / low (switchable)
Inputs: 1x RCA
Input impedance: 50 kΩ
Outputs: 6.35 mm headphone
Other: output “up to 15 V at 32 Ω” (as published; no power figure); THD <0.2%; S/N >95 dB; DY-1 external supply

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Burson

Burson V5i Opamp · Discrete opamp (single / dual) · current

Supply voltage: ±5 V / 10 VDC to ±16 V / 32 VDC (absolute maximum)
Gain-bandwidth product: 50 MHz (at 100 kHz)
Dual or single: dual and single
Package: 11 mm wide × 11 mm deep × 7.3 mm high

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Also in the system

OP275 · Dual operational amplifier

Supply voltage: ±4.5 V to ±22 V; ±22 V absolute maximum
Gain-bandwidth product: 9 MHz typ
Dual or single: dual
Package: SOIC-8; PDIP-8

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LME49720 · Dual operational amplifier

Supply voltage: ±2.5 V to ±17 V (recommended); 36 V absolute maximum (V+ − V−)
Gain-bandwidth product: 55 MHz typ
Dual or single: dual
Package: SOIC-8; PDIP-8; TO-99

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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.