The stock op amp to be replaced was an NE5532P. The V5i was well burnt in so, I immediately installed a Wima 0.1uF foil capacitor across pins 4 & 8 (a fresh couple of Elna Slimic II 220uF are in order as well as soon as the mail parcel arrives…). The wee old yet proven phono stage was given a new lease of life: better dynamics and different, broader soundstage, increase in detail, tighter and extended bass, and faster attack. Very nice!
The System
Listening with
NAD PP2 · Preamp: MM / MC phono preamplifier (external 24 V supply) · discontinued
- Gain: 34 dB (MM); 56 dB (MC) at 1 kHz
- Inputs: phono MM / MC (RCA)
- Input impedance: 47k + 200 pF (MM); 100 + 180 pF (MC)
- Input sensitivity: 0.0025 V (MM); 0.0003 V (MC) for 200 mV out
- Outputs: RCA line
- Other: S/N 80 dB MM / 78 dB MC (A-wtd); overload 102 mV MM / 9 mV MC at 1 kHz; THD 0.03%; RIAA ±0.3 dB; 135 x 35 x 70 mm
[1]
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
[2] [3]
Also in the system
NE5532 · Dual operational amplifier
- Operating voltage: ±5 V to ±15 V (recommended)
- Supply voltage: ±18 V (absolute maximum)
- Unity-gain bandwidth: 12 MHz typ
- Dual or single: dual
- Package: SOIC-8; PDIP-8; SO-8
[4]
