Sound Quality is excellent and customer service is top notch. I started with the V4 opamps and then upgraded to the V5. I had some issues with 7 of the 8 that I had and had them replaced under warranty. My only complaint is not with the product itself, but the shipping costs from the US to AUS that I’ve had to pay for twice.
The System
Listening with
ASUS Xonar Essence STX · Sound card: PCIe sound card with headphone amp · discontinued
- Frequency response: 10 Hz – 90 kHz (-3 dB, 16-bit/44.1 kHz input)
- Output impedance: not published
- Output voltage: RCA 2 Vrms (line out, RCA/3.5)
- Gain: not published
- Inputs: 1x 6.3 mm line/mic in; aux (4-pin header)
- Outputs: 1x 6.3 mm headphone; 2x RCA; S/PDIF out (optical/coax combo)
- DAC / chipset: TI Burr-Brown PCM1792A; ASUS AV100 processor (192 kHz/24-bit)
- Other: SNR (A) 124 dB front-out / 117 dB headphone-out; THD+N 1 kHz 0.0003% (front) / 0.001% (headphone); headphone voltage not published
[1]
Little Dot I+ · Headphone amp: hybrid tube (2x 6J1) / solid-state headphone amp
- Frequency response: 10 Hz – 50 kHz (-3 dB)
- Output power (headphone): 32 Ω 0.8 W · 120 Ω 0.3 W · 300 Ω 0.15 W
- Output impedance: not published
- Gain: 3.25x or 6.5x (user selectable)
- Inputs: RCA
- Input impedance: 50k
- Outputs: 6.35 mm headphone
- Other: THD+N 0.2% @ 1 Vrms, 0.6% @ 3 Vrms, 1.0% @ 5 Vrms (1 kHz); S/N 92 dB; headphones 8-600 Ω; 15 VA; 1.5 kg
[1]
Burson
Burson V5 Opamp · Discrete opamp (single / dual) · discontinued
- Supply voltage: ±3.5 V to ±15 V (absolute maximum)
- Gain-bandwidth product: 50 MHz (at 100 kHz)
- Dual or single: dual and single
- Package: 14.5 mm wide × 12.4 mm deep × 29 mm high (V5-OPA-D)
[2]
