After about 24 hours, its much better than the first place. The op-amp resolves the complexity of symphony orchestra layers and positioning well. Lower bass is tight and controlled, not boomy. The midrange is relaxed, clean and clearer than stock LME49720. The high is clean, smooth and fluidity, no sign of harshness from this range of digital components.
The System
Listening with
Topping D50s · DAC: desktop DAC (dual ES9038Q2M, Bluetooth 5.0) · discontinued
- Frequency response: 20 Hz – 20 kHz (+0.1 dB)
- Output voltage: RCA 2 V
- Inputs: USB (PCM 768 kHz/32-bit, DSD512 native); optical; coaxial (192/24); Bluetooth (AAC, aptX HD, LDAC)
- Outputs: RCA
- DAC / chipset: 2x ESS ES9038Q2M; XMOS XU208
- Other: THD+N <0.0003% @ 1 kHz (A); SNR 122 dB; noise <2 uVrms; crosstalk -130 dB
[1] [2]
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 (this post uses the dual)
- Package: 11 mm wide × 11 mm deep × 7.3 mm high
[3] [4]
Also in the system
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
[5]
