I have NAD PP2E, factory sound is not bad but I want wider scene and voice clarity… I first change power supply for a Linear Low noise = signal is clean et punchy…but not what I want…I change capacitors with Panasonic FC and Elna, sound is really better…but lacking voice! I try to change NE5532 by OPA 2134, Better but not really better :) I try to put Burson 5VI with a SMD to DIP-8 socket… and I hear voice !!! 5VI is really clean, clear and transparent! A bit to bright but I guess time make it smoother…
The System
Listening with
NAD PP 2e · Preamp: MM/MC phono preamp
- Output impedance: 100 Ω
- Gain: 35 dB (MM); 60 dB (MC) at 1 kHz
- Inputs: phono MM / MC (RCA)
- Input impedance: 47 kOhm + 200 pF (MM); 100 Ohm + 180 pF (MC)
- Input sensitivity: 2.5 mV (MM); 0.3 mV (MC), ref. 200 mV output
- Outputs: RCA line
- Other: max output 5.3 V; THD <0.03% (20 Hz – 20 kHz); RIAA ±0.3 dB; SNR 80 dB MM / 78 dB MC (A-weighted, cartridge connected); external 23.5 V DC supply; 135 x 49 x 72 mm
[5]
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
[1] [2]
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
[3]
OPA2134 · Dual operational amplifier
- Operating voltage: ±2.5 V to ±18 V (recommended)
- Supply voltage: 36 V single-supply absolute maximum
- Gain-bandwidth product: 8 MHz typ
- Dual or single: dual
- Package: SOIC-8; PDIP-8
[4]
