tube amps

Born in the U.S.A.: Rogue Audio Cronus Magnum amplifier

A lot of audiophiles love tube amplifiers, and I've owned my share, but I don't currently have tubes in my main hi-fi system. I instantly remembered what I was missing when I hooked up the Rogue Audio Cronus Magnum integrated amplifier with my KEF LS50 speakers. They're good together.

Before founding Rogue Audio in 1996, Mark O'Brien worked for Bell Labs and other companies doing electronics development, lasers, and transformer design. Like so many audio designers I've met over the years, O'Brien started building amplifiers when he was a little kid. Audio is a … Read more

A new high in high-end headphone amplifier design

The Fosgate Signature Headphone Amplifier is one of the very best-sounding amps I've ever used. It was designed by one of the greats, Jim Fosgate, a man who earned 18 audio related patents, founded a number of successful electronics companies -- oh, and he pioneered high-power car audio systems. He was also a big supporter of the very first home surround format -- quadraphonic -- in the early 1970s, and so committed to the format that even as quad was winding down, he designed the Fosgate Tate 101, arguably the finest quad processor of the era. Fosgate also created … Read more

Top 10 great-sounding amplifiers from $40 to $450

This Top-10 list of great-sounding solid-state and vacuum-tube amplifiers includes headphone amps and vintage models. Most are light on features, so if you need autosetup, GUI menus, AirPlay, iPod/iPhone/iPad compatibility, home networking, HD Radio, Bluetooth, HDMI switching, digital-to-analog converters, Dolby and DTS processors, that's not the main plan. The focus is on amps that provide the maximum sound quality for a minimal investment, but I included one receiver with some of those goodies.

I'll do a top-10 affordable speaker list soon.

Dayton Audio DTA-1 Amplifier ($40)

It weighs almost nothing, looks cheap and flimsy, but Dayton'… Read more

Will this 10-watt amplifier rock your world?

Tube amplifiers sound different, and in many ways better than solid-state amps. Describing what better sound sounds like is a highly subjective call. But you can't argue the fact that tubes are still being manufactured, legions of guitarists use tube amplifiers, and a fair number of audiophiles crave tube sound. The catch? Tube designs are more expensive to build and sell than solid-state components.

The Jolida FX10 tube amp ($450) breaks that rule and sells for less than your average mid-price receiver. Jolida was founded in 1995, and has been a budget audiophile favorite right from the beginning. One of my closest audiophile pals bought an early Jolida amp, and he still uses it on a daily basis. So in terms of value, the FX10 will likely be a better long-term investment than most receivers (I get e-mails every week from people asking about dumping their five- or six -year-old receivers).

The FX10 is prettier than Jolida's old designs. Blue LEDs light up the Russian-made EL-84 power tubes and 12AX7 small signal tubes in the glass case, so the FX10 looks especially cool at night. The brushed aluminum chassis and safety glass tube cover are a big step up from what you find on similarly priced receivers. My sample was finished in sky blue, but the FX10 is also available in silver or black. Build quality feels substantial, and the solid-metal, gold-plated speaker wire connectors are a good indication of that. There are two RCA inputs on the rear panel and a 3.5mm input upfront.

The amp comes with a remote control and an iPod hookup cable. The 12-pound unit measures a trim 8x7x7 inches; so it's small enough to fit on a desktop.

The FX10 is a 10-watt-per-channel stereo amp, but don't worry, it can play pretty loud. Bass-heavy reggae music from Ras Mek Peace played nice and loud over my Zu Essence speakers. The little amp wasn't lacking in power or oomph, so yes, 10 watts can drive the right speaker to a remarkably loud volume. Soundstage depth was really good, so each instrument and vocals sounded fully present. This is an extremely well-recorded CD, without dynamic range compression, and the FX10 handled that sort of demanding music without raising a sweat. … Read more

Can a 3.5-watt amplifier rock your world?

Audiophiles never gave up on tube electronics. Sure, there's no shortage of great-sounding solid-state amps to choose from, but tube amps are still a hot commodity in the audiophile world. As good as solid-state amps can sound, they never sound like tubes.

Thing is, tube electronics are more expensive to build than solid-state gear, so when I hear about an affordable tube amp, I want to hear it.

The Miniwatt N3 Integrated Tube Amplifier uses a single ECC83 twin-triode tube feeding a single EL84 output tube per channel, and the amp features a switching power supply. The N3 delivers a healthy 3.5 watts per channel; it was designed in Hong Kong and it's built in China.

Yeah I know 3.5 watts doesn't sound like much, but the N3 made its presence known with a range of speakers, running from my Audioengine P4s ($249/pair), to Dynaudio Contour 1.1s, up to the mighty Zu Audio Essence towers ($3,600/pair). I can't tell you the N3 will work with every speaker, satisfy headbangers, or fill your loft with high-decibel sound. But those 3.5 watts will play louder and sound better than you would have thought. At night with your room lights turned down the tubes' soft orange glow will look way cool. … Read more

A tube amp that could serve sushi

First off, we must disclose that there's no relation between Shigeki Yamamoto, the designer of the tube amplifier pictured with this item, and any particular Cravers we know. How can we be so sure? Because neither we nor any of our relatives would be smart enough to charge up to $7,300 for a piece of audio equipment that looks like a high school electronics project. We've seen our share of tube amplifiers, but the "high-end flea watt tube amp" boasts a ton of specs that we would never dare attempt to decipher, such as "… Read more

Fat tubes to shatter your eardrums

Talk about niches. You may not have known, for example, that there are outfits that specialize in vacuum tube amps. In the case of a company called ZVEX, the focus is small ones. Really small ones.

But there are those that go in the other direction as well. Fatman, for instance, has produced what a three-part vacuum tube system called the "iTube Mothership" that delivers 200 watts of mega-sound, according to Luxurylaunches. Unfortunately, that's not the only thing that's big--so is the price, at nearly $10,000. Still, we're relieved to see that Fatman may … Read more

Long live the series of tubes

Maybe Ted Stevens was onto something--tubes are alive and well, Internet or not. How else can we explain the popularity of tubed gadgets such as the "Nano Head"? And they're not restricted to Lilliputian dimensions either.

The latest comes from China-based Shanling in the form of the "MC-30 Music Center," which Audio Junkies describes as "hi-fi CD player, tuner, iPod dock and tube power amplifier all in one." The price is $995, but that's a bargain compared with Shanling's $3,000 CD player. Both are available at various sites on the … Read more