Mohd’s Burson V7 Vivid Opamp with Fosi Audio BT20A Pro

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Post Info

The upgrade from my OPA828 V5 op-amp has brought a tremendous improvement. It fits perfectly, allowing me to close the casing seamlessly without any issues.

The System

Listening with

Fosi Audio BT20A Pro · Power amp: Bluetooth Class-D stereo amplifier
  • Frequency response: 20 Hz – 20 kHz (±1.2 dB)
  • Power: 4 Ω: 300 x 2
  • Inputs: RCA; Bluetooth
  • Outputs: speaker; 3.5 mm pre out
  • Other: Max power 300 W x 2 at 4 Ω; load 2-8 Ω; THD 0.005%; SNR >=108 dB; TI TPA3255; DC 24-48 V; stock opamps NE5532

[1]

Burson

Burson V7 Vivid Opamp

Also in the system

OPA828 · Operational amplifier
  • Supply voltage: ±4 V to ±18 V (recommended, dual); ±20 V dual-supply absolute maximum
  • Gain-bandwidth product: 45 MHz
  • Dual or single: single
  • Package: SOIC-8; HVSSOP-8

[2]

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.

  1. Fosi Audio BT20A Pro: fosiaudio.com
  2. OPA828: PDF (ti.com, SBOS671D)