_Amplifier Reviews Archives - Twittering Machines

Review: Treehaus Audiolab The Preamplifer & 300B-2 SET Amplifier

September 11, 2025 Michael Lavorgna

Fans of the complete package—design, craft, engineering, performance and quality—can spot many of these traits built into the Treehaus Audiolab The Preamplifer and 300B-2 SET Amplifier from a listening seat away.

Review: Audio Note Meishu Phono 300B Konzertmeister Integrated Amplifier

August 28, 2025 Michael Lavorgna

Pretty damn exquisite. That’s one of the things I have to say about the sound of the Audio Note Konzertmeister—it’s pretty damn exquisite.

Review: Audio Hungary Qualiton 300B Integrated Amplifier

August 14, 2025 Michael Lavorgna

I’ve reviewed my fair share of amplifiers and integrated amplifiers that employ the 300B triode vacuum tube in the output stage.

Review: Wattson Audio Madison Amplifier & Madison LE Streaming DAC

July 31, 2025 Michael Lavorgna

Switzerland’s Wattson Audio makes five products and taking this review into account, I’ve written about four of ’em.

Review: Aesthetix Mimas Integrated Amplifier

July 24, 2025 Michael Lavorgna

In today’s world of overload, that second-by-second flood of data, it’s kind of rare to find a quiet gem.

Review: Octave Audio Jubilee Preamplifier & Jubilee Mono ULTIMATE Monoblock Amplifiers

July 10, 2025 Michael Lavorgna

Power and grace.

Review: JMF Audio PRS 1.5 Preamplifier & HQS 6002 Amplifier

June 12, 2025 Michael Lavorgna

Astonishingly right. After struggling with how best to describe the JMF Audio PRS 1.5 Pre/HQS 6002 pre/power combo, these 2 words seemed to size things up best.

Review: Bel Canto Design Black ACI 600 Integrated Amplifier

May 1, 2025 Michael Lavorgna

I’d like us to think about the Bel Canto Black ACI 600 in architectural terms.

Review: Soulution 331 Integrated Amplifier

February 6, 2025 Michael Lavorgna

Some integrated amplifiers seem to know better than others how to make the speakers they’re driving sound best.

Review: Pathos InPol Heritage MKII Integrated Amplifier

January 30, 2025 Michael Lavorgna

Imagine a luxury ocean liner competing in America’s Cup. And winning.

Review: Luxman L-505Z Integrated Amplifier

January 9, 2025 Michael Lavorgna

Imagine it’s another sleepless night and you’re scrolling through cable stations well into the thousands and you come across a TV Evangelist espousing the dangers of hifi lust.

Review: Atoll SDA300 Signature Streamer / DAC / Integrated Amplifier

December 5, 2024 Michael Lavorgna

There’s something about a Class A/B amp.

Review: Octave Audio V 70 Class A Integrated Amplifier

November 21, 2024 Michael Lavorgna

The Octave Audio V 70 Class A Integrated Amplifier has a lot of great things going for it.

Review: A Cambridge Audio EX Stack | EXN100 Network Player & EXA100 Stereo Integrated Amplifier

November 7, 2024 Michael Lavorgna

I admit that I checked the price of the Cambridge EX stack numerous times throughout the review period.

Review: Fern & Roby Amp No. 2

October 10, 2024 Michael Lavorgna

If you don’t care what something is made from, how it’s made, where it’s made, who made it, what it looks like, how it feels to live with, or how it sounds then you can skip this review.

Review: BorderPatrol S20EXD Parallel Single-Ended Amplifier

September 26, 2024 Michael Lavorgna

When talking ideals in amplification, or any piece of hifi for that matter, my pinnacle is well balanced.

Review: Vinnie Rossi BRAMA Integrated Amplifier

September 5, 2024 Michael Lavorgna

The Vinnie Rossi Brama Integrated Amp slipped, gracefully, onto my list of Favorite Amplifiers soon after it arrived.

Review: Unison Research Unico 90 Integrated Amplifier

August 1, 2024 Michael Lavorgna

I’m tempted to point out that I’ve been very impressed by a number of hybrid integrated amps of late. Nealy enough to be tempted into saying I really like hybrid integrated amplifiers.

Review: A ModWright Stack—LS 99 Balanced Tube Preamp | KWA 99 Monoblocks

June 25, 2024 Michael Lavorgna

Purity and power.

Review: A Naim New Classic Stack—NAC 332 Preamplifier/NPX 300 Power Supply/NAP 250 Power Amplifier

June 18, 2024 Michael Lavorgna

Does anyone really review Naim gear or does Naim gear review us?

Review: Triode Evolution 300 Integrated Amplifier

April 2, 2024 Michael Lavorgna

While I’m no fan of violence, someone needs to take the idea that 300B-based amps are soft and wooly out behind the barn and shoot it.

Review: Audionet HUMBOLDT Integrated Amplifier

March 26, 2024 Michael Lavorgna

When you buy most anything, you’re paying for everything involved in designing, making, packaging, distributing, marketing and selling that thing. You’re certainly not, as some audiophiles appear to think, just paying for some parts.

Review: Thöress EHT MKII Integrated Amplifier

February 15, 2024 Michael Lavorgna

Hybrids are half-loved by some because ideologies can outweigh outcomes. In the case of integrated amplifiers, the outcome I’m most interested in is how power can turn an electrical signal into waves of emotive sound energy as music.

Review: Viva Solista Integrated Amplifier

January 31, 2024 Michael Lavorgna

I can count on one hand the number of integrated amplifiers that stand above and apart from all of the others I’ve had the pleasure of reviewing. Here’s the list:

Review: A Bel Canto e.One Stack | Pre5 Preamplifier / REF501S Stereo Amplifier

January 11, 2024 Michael Lavorgna

I know my way around some Bel Canto, having reviewed their e.One C6i DAC Integrated Amplifier and e.One Stream2 Network Bridge along with the more upscale E1X Integrated Amplifier.

Review: Audio Research I/50 Integrated Amplifier

December 21, 2023 Michael Lavorgna

Tung-Sol introduced the world to the 6550 beam tetrode vacuum tube in 1954, with early production coming out of their Bloomfield, NJ plant. I grew up about 8 miles away and that plant, the Electron Tube Division, remained in operation until I was a teen. […]