STEREOINDEX AUTHOR

Francis Adamiak

Francis Adamiak is a passionate audiophile and expert in high-fidelity audio equipment, with a focus on amplifiers and speakers. Drawing on years of experience and a deep love for sound quality, he shares in-depth reviews and insights on the latest audio technology.

1,861 published articles

LATEST FROM

Francis Adamiak

Ultrafide launches the ENSO INT-125, a powerful integrated amplifier with UltraSigma topology, 2×125W output, toroidal power supply, MM phono stage, and flexible pre/power loop for advanced hi-fi systems.

AMPLIFIERS

Ultrafide ENSO INT-125: A pro-audio heart for the modern hi-fi system

Ultrafide launches the ENSO INT-125, a powerful integrated amplifier with UltraSigma topology, 2×125W output, toroidal power supply, MM…

2026-02-11 · 4 min read

Integrated hi-fi amplifier connected to stereo speakers with speaker cables for amplifier matching setup

AMPLIFIERS

Unison Research Unico V2 Series: Hybrid Dual-Mono Preamp and 650W Power Amp Unveiled

Unison Research introduces the Unico V2 series with a hybrid tube/solid-state preamplifier and a powerful dual-mono amplifier delivering…

2026-02-10 · 6 min read

Luxman celebrates 100 years with the D-100c SACD player and L-100c Class A integrated amplifier, a new flagship duo combining heritage design with modern analog and digital engineering.

HI-FI

Luxman D-100c & L-100c: Centennial Flagship CD Player and Class A Amplifier

Luxman celebrates 100 years with the D-100c SACD player and L-100c Class A integrated amplifier, a new flagship…

2026-02-10 · 4 min read

Audio Note (UK) celebrates 35 years of the Oto with the new Oto SE 35, featuring a redesigned output transformer, updated power supply, and improved phono stage for more lifelike sound.

AMPLIFIERS

Audio Note Oto SE 35: 35th Anniversary Tube Amplifier with Major Design Overhaul

Audio Note (UK) celebrates 35 years of the Oto with the new Oto SE 35, featuring a redesigned…

2026-02-10 · 3 min read

sonoro launches the STREAMER and AMPLIFIER, compact multiroom components with ESS SABRE DACs, HDMI ARC/eARC, smart-home integration, and up to 2×250W of power for custom installations and hi-fi setups.

HI-FI

sonoro’s New STREAMER & AMPLIFIER Promise Clean Sound and Seamless Multiroom Integration

sonoro launches the STREAMER and AMPLIFIER, compact multiroom components with ESS SABRE DACs, HDMI ARC/eARC, smart-home integration, and…

2026-02-09 · 4 min read

HI-FI

PliXiR Elite BAC2000 MkII: True Balanced 2000W Power Conditioner for High-End Audio Systems

PliXiR’s Elite BAC2000 MkII is a 2000W True Balanced AC power conditioner designed for mid- to high-end systems,…

2026-02-09 · 2 min read

Phono preamplifier connected between a turntable and integrated amplifier for MM and MC cartridge setup

AMPLIFIERS

Esoteric XE Series Announced: N-05XE Network DAC/Preamp and S-05XE Class A Power Amplifier Arrive March 2026

Esoteric introduces the XE series with the N-05XE network DAC/preamp and S-05XE Class A power amplifier, combining discrete…

2026-02-09 · 3 min read

Audio Research LS-3 is a fully balanced solid-state preamplifier with dual-mono power supplies, Class-A output stages, and a modern touchscreen interface, designed for clean, dynamic high-end system control.

AMPLIFIERS

Audio Research LS-3: A modern, fully balanced line stage with classic ARC DNA

Audio Research LS-3 is a fully balanced solid-state preamplifier with dual-mono power supplies, Class-A output stages, and a…

2026-02-05 · 4 min read

Eversolo’s OTA V1.5.60 firmware adds Spotify Lossless via Spotify Connect, smarter local library tools, Navidrome support, UI refinements, and stability upgrades across DMP, T, and PLAY Series streamers.

HI-FI

Eversolo OTA V1.5.60 Brings Spotify Lossless to DMP, T & PLAY Series Streamers

Eversolo’s OTA V1.5.60 firmware adds Spotify Lossless via Spotify Connect, smarter local library tools, Navidrome support, UI refinements,…

2026-02-03 · 4 min read

The new Premiera D2S combines streaming, DAC, phono input, and 2 × 168 W Class D amplification in a compact all-in-one hi-fi design.

AMPLIFIERS

Premiera D2S: Network Integrated Amplifier With Higher Power and Built-In Phono Stage

Premiera has launched the D2S network integrated amplifier with 2 × 168 W output, built-in phono stage, streaming,…

2026-02-02 · 3 min read

Audio Research LS-2 is a pure Class A tube preamplifier with zero feedback, balanced topology, touchscreen control, and optional DAC and phono modules—engineered for natural, high-resolution sound in reference hi-fi systems.

AMPLIFIERS

Audio Research LS-2: Pure Class A Tube Preamplifier with Modern Touchscreen Control

Audio Research LS-2 is a fully tube-based Class A preamplifier with zero feedback, balanced design, touchscreen control, and…

2026-02-02 · 3 min read

DAC

SMSL DAC MINI: Mac Mini-Optimized DAC, Balanced Headphone Amp & USB Hub

The SMSL DAC MINI is a compact Mac mini-designed DAC and headphone amp featuring ESS ES9039Q2M, XMOS XU-316,…

2026-02-02 · 4 min read