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
More content
Thrax Audio Cotys – an Uncompromising MC-Phonostage from Bulgaria
The innovative Thrax Audio Cotys phono preamplifier is presented – a model designed for fans of High-End equipment and developed in Bulgaria. The device is designed to work with MC cartridges and uses a fully balanced RIAA equalizer based on LCR filters. The innovative differential input stage and nanocrystalline inductors set a new standard for noise levels – it does not exceed 70 nV! Fully adjustable load/gain (100 – 1,000 Ohms and 50 – 70 dB) is the cherry on the cake.
Evolution Acoustics SYSTEM THREE – Large-Scale Loudspeakers
Evolution Acoustics has completed a series of ten years of research and development with the release of the impressive Evolution Acoustics SYSTEM THREE acoustic system, which has become the successor to the iconic top model of the MM-series.
Sonoro Orchestra Slim Gen.2 – Bookshelf Loudspeakers with Bass from 45 Hz
Sonoro has released bookshelf loudspeakers – the second generation of the famous model is called Sonoro Orchestra Slim Gen.2. The manufacturer claims the ideal partnership of the speakers with the proprietary Sonoro Maestro Smart receiver, as well as any third-party amplification
SOtM's New Eunhasu OS Offers Direct Ethernet Connection Option
The well-known manufacturer of High-End digital equipment, SOtM has updated its own operating system Eunhasu OS (based on an upgraded Linux kernel) to version 0.5.9 (the software is used in the company's streaming products, such as the server SOtM sMS-1000SQ Eunhasu, which is shown in the photo).
Coturn by Thorens CT-01 – Take Vinyl on the Road
The original concept of the Coturn CT-01 turntable was developed by designer Benjamin Großjohann more than five years ago. He also produced the turntable in small batches – now serial production has been organized by Thorens, and the model is called Coturn by Thorens CT-01.
