Amplifiers

Octave Jubilee Mono Ultimate unveiled

The reference tube power amplifier, Octave Jubilee Mono Ultimate, operates from 10 to 100,000 Hz and uses KT 170 tubes The Octave Jubilee Mono Ultimate achieves 225W of dynamic output power – the capabilities of large power transformers and proprietary circuitry extend far beyond traditional tube technology. The device body is assembled from 8 mm aluminum, […]

By Francis Adamiak · 2023-12-29 · 1 min read

The reference tube power amplifier, Octave Jubilee Mono Ultimate, operates from 10 to 100,000 Hz and uses KT 170 tubes

The Octave Jubilee Mono Ultimate achieves 225W of dynamic output power – the capabilities of large power transformers and proprietary circuitry extend far beyond traditional tube technology. The device body is assembled from 8 mm aluminum, 2 mm steel and 50 mm X-MDF plates.

Octave Jubilee Mono Ultimate introduced

This article is being updated as soon as we know more about the amplifier.

COMMENTS

Share your thoughts on this ⁰

Keep it civil, relevant and respectful.

Add a comment Cancel reply

FRESH FROM STEREOINDEX

The Lampizator Horizon 2 advances the company’s flagship tube DAC platform with revised digital processing, a redesigned analog stage and factory upgrade support for existing Horizon owners.

DAC

Lampizator Horizon 2 DAC Brings New Technology and an Upgrade Path

The Lampizator Horizon 2 advances the company’s flagship tube DAC platform with revised digital processing, a redesigned analog stage and…

4 min read

Lithuanian loudspeaker manufacturer Silent Pound has revealed the first details of an unnamed flagship built around a folded dipole bass system and virtual coaxial driver arrangement.

Speakers

Silent Pound Previews Its Most Ambitious Loudspeaker Yet

Lithuanian loudspeaker manufacturer Silent Pound has revealed the first details of an unnamed flagship built around a folded dipole bass…

3 min read

Premiera A5 Axiom combines 275W Class AB power, dual-mono construction, ESS Sabre DAC, HDMI ARC, MM/MC phono and Bluetooth 5.4.

Amplifiers

Premiera Goes All-In on Class AB With the 275W A5 Axiom

Premiera A5 Axiom combines 275W Class AB power, dual-mono construction, ESS Sabre DAC, HDMI ARC, MM/MC phono and Bluetooth 5.4.

6 min read

iFi’s 3-gram UP Play Max bypasses a source device’s native Bluetooth limitations, offering an extensive codec selection alongside gaming, call and sharing features.

Hi-fi

iFi UP Play Max Unlocks More Bluetooth Codecs Over USB-C

iFi’s 3-gram UP Play Max bypasses a source device’s native Bluetooth limitations, offering an extensive codec selection alongside gaming, call…

3 min read

Higher LCD panel costs and planned production cuts could place pressure on holiday television promotions, particularly as lower-cost OLED models narrow LCD’s traditional pricing advantage.

Home Cinema

Bad News for Home Cinema Fans: Black Friday TV Deals Could Shrink

Higher LCD panel costs and planned production cuts could place pressure on holiday television promotions, particularly as lower-cost OLED models…

4 min read

AV Receiver

Yamaha RX300A and RX500A Bring 8K Video and Atmos to New AV Receiver Range

The Yamaha RX300A and RX500A combine flexible multichannel layouts, current gaming features and room correction, with network streaming reserved for…

4 min read

Headphones

Sony WH-1000XM4C Revives the Legendary XM4 With Bluetooth 6.0 and Replaceable Battery

The Sony WH-1000XM4C has emerged as a returning headphone model, although technical specifications, pricing and availability have yet to be…

9 min read

The Sonos Ace Ultra is positioned as a flagship wireless headphone update, with direct integration into the home audio ecosystem as its defining feature.

Headphones

Sonos Ace Ultra Focuses on Home Audio Integration

The Sonos Ace Ultra is positioned as a flagship wireless headphone update, with direct integration into the home audio ecosystem…

2 min read

TESTED

Reviews

See all →

Review

FiiO JadeAudio JT9 Review: Planar Sound Without the Planar Price

FiiO JadeAudio JT9 brings planar-magnetic headphone technology to a more affordable price point. We look at its design, features, usability…

4 min read

Review

Hegel H200 Review: A Modern Hi-Fi Powerhouse Without the Gimmicks

The Hegel H200 is an integrated Class AB amplifier built around 150 watts per channel, extensive network playback, an internal…

6 min read

Noble’s $700 closed-back wireless flagship combines dynamic and planar drivers with ANC, high-resolution USB audio and unusually broad headset functionality.

Review

Noble FoKus Apollo Pro Review: Hybrid Ambition Goes Wireless

Noble’s $700 closed-back wireless flagship combines dynamic and planar drivers with ANC, high-resolution USB audio and unusually broad headset functionality.

6 min read

Marshall Milton ANC combines a compact on-ear design with adaptive noise cancellation, Bluetooth 6.0, LDAC, impressive battery life and a distinctly energetic sound. With up to 80 hours of playback, replaceable components and classic Marshall styling, it offers a compelling alternative to bulkier premium wireless headphones.

Review

Marshall Milton ANC Review: Serious ANC Headphones in a Compact On-Ear Design

Marshall Milton ANC combines a compact on-ear design with adaptive noise cancellation, Bluetooth 6.0, LDAC, impressive battery life and a…

17 min read

DISCOVER

Product Spotlight

A closer look at interesting new hi-fi.

Product Spotlight

JVC HA-NP50T Nearphones Put Awareness First

The JVC HA-NP50T Nearphones are designed for listeners who want music, calls, and video sound without becoming disconnected from their…

7 min read

Product Spotlight

Moondrop Nekocake: Affordable TWS With ANC and DSP

The Moondrop Nekocake is a $43 true wireless earbud built around 13mm dynamic drivers, digital active noise reduction and five…

6 min read

Product Spotlight

Focal Hadenys and Azurys Bring One Driver to Two Different Roles

Focal’s Hadenys and Azurys share French-made 40mm aluminum-magnesium drivers and a carefully coordinated material palette, but their open- and closed-back…

7 min read

Product Spotlight

Klipsch Flexus Core 100: A Compact Start to Dolby Atmos

With integrated subwoofers, virtual Dolby Atmos processing, HDMI eARC, and optional wireless expansion, the Flexus Core 100 is designed to…

7 min read

Product Spotlight

Cambridge Audio AXR85: Traditional Hi-Fi Made Flexible

The Cambridge Audio AXR85 combines a substantial stereo amplifier, MM phono stage, Bluetooth 5.0 and AM/FM radio in a deliberately…

7 min read

Product Spotlight

Kiwi Ears Spark puts an open design to practical use

The Kiwi Ears Spark is designed around mobility, combining an open form, secure fastening, Bluetooth 5.2, practical call features, and…

7 min read

LEARN

Essential Guides

All guides →

Plug and Play: How to Choose the Best All-in-One Turntable

Guide

Five Turntables Compared: The Right Deck for Every Listener

These five turntables take very different approaches to vinyl, from fully automatic plug-and-play simplicity to high-end manual designs. Here is…

11 min read

Guide

Five DACs Compared: Which One Fits Your System Best?

These five DACs are aimed at very different listeners: desktop users, headphone enthusiasts, digital purists and owners of advanced hi-fi…

11 min read

HiBy R6 Pro II 2025: Snapdragon-Powered Hi-Res Audio Player

Guide

The Best DAPs for Every Listener and Budget

The right portable audio product depends on more than decoding numbers. This guide compares five very different options, from the…

12 min read

T+A has announced two new HV-series components: the A 3100 HV flagship stereo power amplifier and the SDX 3100 HV streaming preamplifier with DAC.

Guide

Best Amplifiers for Every System, Budget and Listening Priority

From an affordable Cayin tube integrated to T+A’s flagship streaming separates, these amplifiers serve very different systems. Here is how…

11 min read

EDITOR'S DESK

Compare before you choose

All comparisons →

VS COMPARISON Technics AZ100 vs OPPO Enco Air2 Pro The Technics AZ100 brings warm, powerful sound, sturdy construction and customizable controls, while the…

Campfire Relay: DA converter and headphone amplifier with 3.5 and 4.4 mm jacks

VS COMPARISON Campfire Audio Relay vs Esoteric P-02X The Campfire Audio Relay and Esoteric P-02X both handle digital audio, but one is…

VS COMPARISON FiiO M21 vs Shanling M7 The FiiO M21 and Shanling M7 are both hi-res digital audio players, but they…

VS COMPARISON T+A MP 200 G3 vs Naim NDX 2 The T+A MP 200 G3 and Naim NDX 2 are both serious streaming sources,…

The HiFi Rose RW800 Rose Air Lite is a compact network streamer designed both as a standalone source and as an upgrade path for compatible Rose components.

VS COMPARISON HiFi Rose RW800 Rose Air Lite vs Ruark Audio R410 Anniversary Edition The HiFi Rose RW800 Rose Air Lite is a compact streaming add-on for existing…

VS COMPARISON SoundPEATS Space vs Tripowin H1 SoundPEATS Space is the practical wireless ANC option, while Tripowin H1 is the open-back…

Most common questions about vinyl players and more

VS COMPARISON McIntosh MHT300 vs Conventional AV Receiver The McIntosh MHT300 is a premium, specified AV receiver with Dolby Atmos, DTS:X, UHD…

The D&A Alpha is a compact but serious desktop DAC and headphone amplifier, featuring dual-mono ES9039Q2M DACs, discrete balanced amplification, analog volume control, and full USB, Bluetooth, and XLR connectivity.

VS COMPARISON D&A Alpha vs Topping D900 The D&A Alpha and Topping D900 are both serious DACs, but they serve different…

KEEP EXPLORING

Across Stereoindex

Headphones

View all

Review

FiiO JadeAudio JT9 Review: Planar Sound Without the Planar Price

FiiO JadeAudio JT9 brings planar-magnetic headphone technology to a more affordable price point. We look at its design, features, usability…

4 min read

Headphones

Sony WH-1000XM4C Revives the Legendary XM4 With Bluetooth 6.0 and Replaceable Battery

The Sony WH-1000XM4C has emerged as a returning headphone model, although technical specifications, pricing and availability have yet to be…

9 min read

Headphones

Sonos Ace Ultra Focuses on Home Audio Integration

The Sonos Ace Ultra is positioned as a flagship wireless headphone update, with direct integration into the home audio ecosystem…

2 min read

Speakers

View all

Speakers

Silent Pound Previews Its Most Ambitious Loudspeaker Yet

Lithuanian loudspeaker manufacturer Silent Pound has revealed the first details of an unnamed flagship built around a folded dipole bass…

3 min read

The Sony BRAVIA Theatre Trio uses a dedicated center speaker, two wireless front speakers and spatial processing to deliver a broader alternative to a conventional soundbar.

Home Cinema

Sony BRAVIA Theatre Trio Builds a Wider 3.0.2-Channel TV Soundstage

The Sony BRAVIA Theatre Trio uses a dedicated center speaker, two wireless front speakers and spatial processing to deliver a…

4 min read

Wharfedale Nova Subwoofers Span 8 to 15 Inches

Speakers

Wharfedale Goes Deep: New Nova Subwoofers Scale from 8 to 15 Inches

The Wharfedale Nova range introduces four active subwoofers for stereo and multichannel systems, with driver sizes from 8 to 15…

4 min read

Amplifiers

View all

Amplifiers

Premiera Goes All-In on Class AB With the 275W A5 Axiom

Premiera A5 Axiom combines 275W Class AB power, dual-mono construction, ESS Sabre DAC, HDMI ARC, MM/MC phono and Bluetooth 5.4.

6 min read

Review

Hegel H200 Review: A Modern Hi-Fi Powerhouse Without the Gimmicks

The Hegel H200 is an integrated Class AB amplifier built around 150 watts per channel, extensive network playback, an internal…

6 min read

Guide

Best Amplifiers for Every System, Budget and Listening Priority

From an affordable Cayin tube integrated to T+A’s flagship streaming separates, these amplifiers serve very different systems. Here is how…

11 min read

Streaming

View all

Guide

Five Streaming Devices Compared: Which One Fits Your System?

These five source posts do not describe five directly competing streamers: they cover a network player, a premium multi-source player,…

12 min read

Guide

Five Network Streamers Compared: Which One Should You Buy?

These five streamers take very different approaches, from compact all-rounders to specialist digital transports and high-end network players. Here is…

11 min read

iFi ZEN Stream 3 brings Qobuz, TIDAL and lossless streaming to classic hi-fi setups. A pure transport with audiophile-grade clocking, noise reduction and modern connectivity.

Guide

Five Streaming Hi-Fi Options Compared: Which One Fits Your System?

These five streaming products take very different approaches, from a €399 transport for an existing DAC to luxury players with…

14 min read

Share your thoughts on this 0

Add a comment Cancel reply

Reviews

Product Spotlight

Essential Guides

Recommended

Compare before you choose

Across Stereoindex

Headphones

Speakers

Amplifiers

Streaming

Share your thoughts on this ⁰