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PrimaLuna DiaLogue Seven Tube Monoblock Power Amplifier

primaluna-dialogue-seven-amplifier-teaser

PrimaLuna is a Dutch-based company that released its first products, the ProLogue One and ProLogue Two integrated tube amplifiers in 2003. Then, in 2006, they released the ProLogue Three preamplifier, and ProLogue Five, Six, and Seven power amplifiers. Late in that same year, the PrimaLuna DiaLogue series hit the market, which had the DiaLogue's basic features, but with upgraded parts and additional capabilities. Here, we review the DiaLogue Seven, which is a monoblock power amplifier, capable of delivering 40 watts RMS in triode mode, and 70 watts RMS in ultra-linear mode (see review for an explanation of what this means). The bottom line is that the PrimaLuna DiaLogue Seven monoblock is more than capable of delivering a clean, detailed, and lush sound (ah, those tubes are responsible for that).

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Rotel RMB-1575 Five-Channel Class D Power Amplifier

Rotel RMB-1575

Class D switching amplifiers are more and more common. Manufactures have made great strides in overcoming the high-frequency shortcomings found in the early models. Rotel in particular has been involved with this technology for a few years, with a significant portion of their line-up now using this.

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Emotiva XPA-2 Stereo Power Amplifier

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Everyone would like a "good deal" in the world of audio, but there's usually a lot of skepticism involved because of the tendency for such products to be made with cheaper components and outsourced labor.

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Bryston 4B SST2 Stereo Power Amplifier

Bryston 4B SST2 C-SERIES

Bryston Ltd. is a Canadian company which has been designing and manufacturing audio equipment for over 35 Years. While there are many companies competing in their market, Bryston's gear is coveted by enthusiasts and professionals alike. They have earned the reputation of providing bullet-proof reliability, high performance and value. Byston's value is not due to a bargain basement price. It's the sound and their 20 year guarantee of high performance that can make a Bryston purchase a value. This remarkable warranty speaks to Bryston's confidence in their own quality standards, and it is definitely the exception versus the rule in the A/V industry.

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Jaton Operetta 2300a Class A/B Amplifier - First Look

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The Jaton company has been around for over 25 years. They started with manufacturing PC video cards, and have since branched into home theater and hi-fi gear. Lyra's HD-661 DX speakers were recently reviewed at Secrets, and their interesting design and great sound made me want to try out their amplification. George from Jaton was kind enough to send me a rather large and heavy Class A/B Stereo amplifier capable of putting out 300 watts RMS per channel into 4 ohms. Initial problems with the amplifier has required Jaton to redesign it, and the revised version will be sent to me for review In the meantime, here are some initial observations on the unrevised unit.

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Pass Labs XA30.5 Stereo Power Amplifier

Pass Labs XA30.5 Stereo Power Amplifier

What do a 30 watt stereo solid-state amplifier and a 500 watt solid-state monoblock have in common? A lot, it turns out. The seemingly diminutive Pass Labs XA30.5 weighs 75 pounds, has an enormous toroidal power transformer, and uses 20 output transistors to deliver 30 watts of pure class A power. It turns out these specs are similar, or in some cases, better than my recently reviewed Emotiva XPA-1 monoblocks. The XA30.5 proves that rated power is by no means everything. In fact, if you have speakers of even moderately high sensitivity, the XA30.5 renders any discussion of power output irrelevant. When paired with the right speakers, this may be one of the best amplifiers there is, regardless of price.

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Rotel RMB-1085 Class D (Switching) Five-Channel Power Amplifier

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Class D switching amplifiers are here to stay. The RMB-1085 is a five channel home theater amplifier that uses ICE power modules which stay cool and deliver very efficient high power, all from a small chassis.

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Bel Canto S500 Stereo Power Amplifier

Bel Canto S500 Power Amplifier

Let me first state "I like this amp, I really do." What does "Class A, A/B, D, ICEpower" mean to the average audiophile? Will there be an audible benefit by upgrading to the newer technology? If I am making an initial purchase will this technology satisfy me? Does the amp du jour really make a difference in the listening experience for the average listener?

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Halcro MC70 Seven-Channel Power Amplifier

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Halcro's MC series amplifiers come in two, three, five and seven channel configurations (designated the MC20, MC30, MC50, and MC70). The MC70 lists for $7,000, but compared to the Halcro Reference DM88 monoblocks, which will set you back more than $40,000 per pair, the MC70 is quite the bargain. So what kind of amp do you get for a kilobuck per channel?

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Emotiva XPA-1 Monoblock Power Amplifier

Emotiva XPA-1 Monoblock Power Amplifier

ADDENDUM - 4/1/09 I (JEJ) was so impressed with Chris' review of the XPA-1 (published in January, 2009), I asked Emotiva to send me one so I could run some of my own tests. I borrowed a different power amplifier from a friend that cost more than 6 times the price of the XPA-1, which I will call Amplifier "X" here. I ran the same tests on both amplifiers. Click on the photo to see the results (go to Page 4: Emotiva XPA-1 On the Bench, and my results are down near the bottom of the page).

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Lexicon ZX-7 Multi-Channel (300 watts x 7) Power Amplifier

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The Lexicon ZX-7 is a very powerful (300 watts RMS x 7 into 8 ohms) amplifier that delivers exquisite sound for two-channel music, surround sound music, and any movie you can imagine.

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