Ranieri Audio Labs Varieta – a Preamplifier for Tube-Rolling
27.04.2025 07:47 | ~1 minute read
The Ranieri Audio Labs Varieta preamplifier has been released – the model uses directly heated triodes and allows for a wide range of tubes (300B, 2A3/6A3, 12A/201A, 26, 30, 31, 45, 50, 71A, 801A/10Y, 275A/252A, 245 and 842/VT52 will do). Simply ideal for those wishing to experiment with tube rolling.
The creators note that the Ranieri Audio Labs Varieta model will work perfectly with the entire spectrum of the tubes described above – instantly adjusting to the user’s chosen solution and offering different shades of sound depending on the type of tubes. The device uses low-noise circuitry and a two-stage solution with zero feedback and separate outputs with transformer coupling. A linear stabilized power supply ensures stable and stable operation of the preamplifier, and the auto-bias system eliminates the need for manual current adjustment.
Of other features of the Ranieri Audio Labs Varieta, it is worth noting the element base on Lundahl, Caddock, Alps and WIMA components and a chassis made of extruded aircraft aluminum 6061.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Preamplifiers — Ranieri Audio Labs Varieta
Model name
Varieta
Analog inputs (balanced)
N/A
Analog inputs (single-ended)
N/A
Analog outputs (balanced)
N/A
Analog outputs (single-ended)
N/A
Gain (dBu)
N/A
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
N/A
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
N/A
Dimensions (mm)
N/A
Weight (kg)
N/A
Official link
