Upgrade phono zosilňovača .Výmena IO TL071 za OPA 604AU.A výmena kondenzátorov Samxon za Panasonic.Samxon ESR 0,36 Panasonic ESR 0,15.

Technické parametre TL071

• High slew rate: 13 V/μs (TL07xH, typ)
• Low offset voltage: 1 mV (TL07xH, typ)
• Low offset voltage drift: 2 μV/°C
• Low power consumption: 940 μA/ch (TL07xH, typ)
• Wide common-mode and differential
voltage ranges
– Common-mode input voltage range
includes VCC+
• Low input bias and offset currents
• Low noise:
Vn = 18 nV/√ Hz (typ) at f = 1 kHz
• Output short-circuit protection
• Low total harmonic distortion: 0.003% (typ)
• Wide supply voltage:
±2.25 V to ±20 V, 4.5 V to 40 V

Technické parametre OPA604A

LOW DISTORTION: 0.0003% at 1kHz

LOW NOISE: 10nV/√Hz

HIGH SLEW RATE: 25V/μs

WIDE GAIN-BANDWIDTH: 20MHz

UNITY-GAIN STABLE

WIDE SUPPLY RANGE: VS = ±4.5 to ±24V

DRIVES 600Ω LOAD