Factory Tour D’Agostino Master Audio Systems! By Robert S Youman.


Dan Dagostino MLifeRobert S. Youman of Positve Feedback Online has visited the factory of D’Agostino Master Audio Systems. It is a great article to read. Check the full story HERE

 

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Great review of the Krell Chorus 7200 by Vincent Vaughn of Sound and Vision Magazine!


chorus_7200_foundation_krellOn the newsstands now is the April, 2015 issue of Sound &Vision magazine which includes a great review on the Chorus 7200. David Vaughn loved the sound and the magazine awarded the Chorus 7200 one of their coveted Top Picks honor. David also used the Foundation Processor as part of the review and lamented,

Some statements are:

“…dynamic performance was readily apparent with every Blu-ray I threw at the Krell. The beach landing in Saving Private Ryan exploded into my room, with each discrete effect placed precisely in the soundstage. And the 7200 brought an uncanny immediacy to softer passages, such as the opening monologue recited by Morgan Freeman… where it truly sounded as if Freeman was sitting in the room with me … Impressive is an understatement.”

 

“…dynamic performance was readily apparent with every Blu-ray I threw at the Krell. The beach landing in Saving Private Ryan exploded into my room, with each discrete effect placed precisely in the soundstage. And the 7200 brought an uncanny immediacy to softer passages, such as the opening monologue recited by Morgan Freeman… where it truly sounded as if Freeman was sitting in the room with me … Impressive is an understatement.”

 

Check the full review ( PDF) HERE. Durob Audio is the distributor for Krell products in the BeNeLux. For more information please contact us HERE. On the website of Krell you find also the information about Krell and their products.

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The PrimaLuna ProLogue Premium Integrated amplifier! The Absolute Sound Editors’ Choice Award 2015!


TAS 2015Conclusion editor

Sonically, the 35Wpc ProLogue Premium does not have the rosy colorations of traditional triode or SET tube varietals. True, there is a glimmer of romance and softness, but tonally it’s a thoroughly contemporary tube amp that walks a mostly neutral line yet still seasons the lowest level details of music with delicacy and resolution. NG, 212

 

Information from the website

PrimaLuna ProLogue Premium Integrated Amplifier

By incorporating the best elements of the critically-acclaimed ProLogue One andTwo, plus many of the ground-breaking features from the more advanced DiaLogue Series, the next generation ProLogue Premium Series, is an engineering marvel — a single, integrated amplifier that sets a new benchmark in high-performance audio with the following features:

  • Adaptive AutoBias. A PrimaLuna exclusive. If anybody tells you that they have auto bias, ask them precisely how.  It’s most likely not true.  As with all PrimaLuna amps, you never have to worry about biasing your amp ever again, and the need for matched tubes is eliminated.  Just plug in EL34, KT88, or KT120 (as well as many others) and AAB does the rest while improving sound quality.  Tubes are constantly monitored and kept in their best operating range, reducing distortion by up to 50%!
  • Home theater pass-thru. Straight from the critically-acclaimed DiaLogue Series, this direct-line circuitry means less noise and coloration over unity gain circuits.  You can hook it up to a surround processor, and when you switch the ProLogue Premium to HT the amplifier becomes in essence a power amp.
  • Relay based input selection. Instead of a cheap selector switch, PrimaLuna has a relay and circuit mounted at every input.  If you select a CD player input, for example, a relay closes and a perfect load is presented to the item you are listening to.  All other relays are open so as to prevent crosstalk between inputs.  This is many times more expensive to build, and you would never see it, but it is what PrimaLuna stands for!
  • Custom wide bandwidth output transformers No other brand can copy the PrimaLuna sound for one simple reason: PrimaLuna output transformers. Almost every manufacturer buys their output transformers off the shelf; with varying degrees of success. Transformers are the most important (and most expensive) ingredient in making an amplifier. Our output transformers are custom wound in-house. The designs are the result of collaboration between engineers in the Netherlands and the United States, and built to the same standards that you come to expect from the world’s authority on tube amplifier manufacturing.
    That’s why PrimaLuna bass extension is deep and tight, the top end extended but without even a hint of grain, and that famous PrimaLuna midrange, which creates a sense of space and shape you won’t get anywhere else.
  • New front-end circuitry. Optimized to use two 12AU7 tubes per channel. With the improved transformers, produces lower distortion.
  • Full-function remote. Slim, anodized aluminum remote, controls volume, mute, and source selection, as well as Play/pause and Stop/eject functions of the new ProLogue Premium CD Player.
  • SmartWatts design. PrimaLuna’s true-value, low stress design philosophy.  Many manufacturers fudge on their power ratings, claiming power that is mathematically impossible.  Every seasoned tube owners knows that 20 watts from a tube amp is a ton of power.  What is really important is that PrimaLuna runs their power tubes up to 40% easier that other manufacturers.  You can tell easily by putting your hand on top of a PrimaLuna amp.  They run cooler than others.  There is no reason to run tubes at their jagged edge.  Why do manufactures do it? Click here to see more.

Next, the ProLogue Premium Series introduces four innovative circuits that protect the amp at every level:

  • BTI-circuit. BTI stands for “Bad Tube Indicator.” On the chassis’ deck in front of each power tube, is a small LED that lights up if the tube goes bad. The circuit then puts the amp into protection mode.  With other brands, this may be when you have to break out the soldering iron to replace a plate resistor, and replace two or four tubes because your amp requires matched sets.  With PrimaLuna, you just replace the tube it tells you to (no matched tubes required), and turn the amp back on.  No hassles, no headaches.
  • PTP-circuit. If the power transformer should overheat, this “Power Transformer Protection” circuit cuts primary power, allows the amp to cool down, then resets itself.
  • OTP-circuit. The “Output Transformer Protection” circuit protects the output transformers in the event of a massive tube failure or user error.
  • +B relay. Replaces the plate fuse and works in conjunction with the OTP-circuit to protect the amp against tube failure. This method is less intrusive sonically and the relay resets itself once the faulty tube is replaced.

As with all PrimaLuna components, the ProLogue Premium Integrated is made by hand with the finest point-to-point wiring and quality equal to—or better than—any product you can buy at any price. Built using premium parts featuring: ceramic tube sockets; Solen and Nichicon capacitors; WBT-style solid core speaker terminals; ALPS Blue Velvet volume control; gold-plated RCA jacks; toroidal power transformer. All packaged in a high-gloss, hand-rubbed finish.

The ProLogue Premium Integrated Amplifier has also received “The Absolute Sound Editors’ Choice Award 2014″ For more information about The PrimaLuna ProLogue Premium Integrated Amplifier check www.primaluna.nl and www.primaluna-usa.com. If there is NO dealer or distributor nearby? Please contact us DIRECT!

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The PrimaLuna ProLogue 8/Classic CD Player: The Absolute Sound Editors’ Choice Award 2015!


TAS 2015Conclusion editor:

An amazing value! Unique tube-based clock. At its best, with the board upgrade, the Eight closes in on even the most expensive competition. It’s blessed with plenty of boogie factor, superb clarity, sensuous mids, and lovely harmonic bloom. Its portrayal of the soundstage is wonderfully transparent.

Out of the box, upper octaves are a bit grainy and bright. Tube dampers significantly help , as do vintage preamp tubes. DO, 183

Information from the website

Revolutions are born in bold ideas. In true PrimaLuna fashion, the stunning ProLogue CD Player will revolutionize the audio industry by introducing the world’s first tube-based data clocking device: the SuperTubeClock™

PrimaLuna ProLogue EightBy incorporating a low-noise mini-triode vacuum tube into the digital clock, this boldly conceived design provides vastly superior resolution, detail retrieval, improved clarity, increased definition and detail from top to bottom.

The ProLogue CD player is a true dual-mono design, right down to the dual vacuum tube rectification — another first in a CD player. The power supply is adapted from the award winning ProLogue Three preamp, as are its high quality resistors, mosfets, and Solen capacitors which yield superior transient response, detail, and channel separation. The ProLogue CD Player comes equipped with:

  • TRUE DUAL MONO OUTPUT STAGE Using one 12AX7 and one 12AU7 per channel.
  • VACUUM TUBE RECTIFIED POWER SUPPLY Adapted from the award-winning ProLogue Three preamp that incorporates eleven separate power supply regulation circuits.
  • STATE-OF-THE-ART Utilizing Burr Brown SRC4192 24bit/192kHz upsampling circuit with accompanying Burr Brown PCM1792 DACs.
  • THE SUPERTUBECLOCK™ An ultra-low jitter clocking device that replaces the solid-state oscillator with a vacuum tube. Yields incredible detail retrieval and dynamics throughout the entire audio spectrum.
  • SUPER I/V BOARD The Super IV board incorporates a new type of op-amp that to our knowledge has never been used by any audio manufacturer before. The Super I/V Board also upgrades the bypass caps and power supply caps, so with the increase of speed, detail, and quietness you get above, you get a prettier “picture.”
  • PREMIUM PARTS Including polypropylene coupling caps, triple pi power supply filters, custom designed isolation transformers separating the analog and digital devices, resulting in decreased signal degradation and improved sonics from top to bottom.
  • True Dual Mono output stage using one 12AX7 and one 12AU7 per channel.
  • Beautiful heavy-gauge anodized brushed aluminum remote control. Controls all important CD operations and will even control functions on the DiaLogue components. Comes with rubber rings on both ends to protect furniture.
  • Chassis made of finely finished heavy gauge steel, and five step automotive quality finish. Each coat hand rubbed and polished. Removable tube cage included no charge.
  • Conservative design runs tubes easy for long life.
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NEW!! Audia Flight Three S Integrated Amplifier!


 

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Audia has introduced the Audia Flight Three S Integrated Amplifier!

After achieving big experience with the Flight Three and also with the Strumento line, Audia Flight is proud to introduce the Flight Three S integrated amplifier.

It’s an incredible component, where every small detail is carefully thought out for the discriminating high-end audio enthusiast, and yet, offering exceptionally high value.

To thank you the optional USB 24bit 192KHz DAC board converter and the optional MC / MM phono board, the Audia Flight Three S is an investment for years!

The headphone output will give you the chance to listen your music with your headphone! The front panel, the knob and the remote control are masterpieces crafted from solid aluminium. The input selector allows the user to choose among four unbalanced and one balanced input(s), featuring sealed relays in inert atmosphere and gold terminations.

The logic control, with an independent toroidal transformer, as in our philosophy, is independent from the analogue section and connected by photo-couplers only.

A by-pass feature, selectable by remote control, allows the user to turn the Flight Three S into a power amplifier through a specified input. You may include the amplifier in a multi-channel system as front speakers power amplifier, while using the same speakers for two channel listening with stereo sources connected to the amplifier.

Rec input, Monitor and Preamp output achieve the full flexibility for this Hi-End integrated amplifier.

Two 100Wrms amplifiers with 600VA toroidal transformer, dual mono design, current feedback and sophisticated preamp section allow the stunning sonic picture of a truly high-end system, with a deep and incredible bass control.

Eight stabilized power supplies give energy to all stages until the driver and four hi-current power supply (72000µF) for the output stages only and 13200uF total capacitors for the stabilized power supply to supply the gain stage until driver transistor

A large display will inform you about the input choice and the main sets as you select them.

More, the ALPS blue potentiometer, mute function with memory, aluminium remote control with full control and the optional, internal MC / MM phono board and internal USB 24bit 192KHz DAC board converter are only few characteristics of this amazing Hi End integrated amplifier 100% made in Italy.

Technical Data

Output power Wrms 8 / 4 ohm 100 / 160

Amplifier stage gain 26dB

At maximum volume:

Frequency response (1Wrsm, -3db) 1Hz – 450KHz

Slew Rate (on 8 ohm) >80V/µS

THD <0,05%

S/N ratio >95dB

Unbalanced input impedance 51Kohm, 150pF

Balanced input impedance 30Kohm

Stand-by consumption less than 0.5W

Maximum consumption 400W

Dimensions and weight 450 x 110 x 440 (W x H x D), 16,5 Kg

Shipping dimensions and weight 540 x 250 x 590 (W x H x D), 18,5 Kg

INPUTS and OUTPUTS: 4 unbalanced input, 1 balance input, 1 monitor input, a possibility to have one input as a “direct”, 1 pre output, 1 rec output., 1 output for headphone

OPTIONAL BOARDS:

Phono MC-MM

USB 24bit 192KHz DAC

Note:

The USB input has insulated to prevent any noise from the PC.

When the USB is used together with a player application such as FooBar or WinAmp (available for free on Internet), you can transfer stream music files to internal converter at 192kHz/24bits maximum frequency/resolution, avoiding undesired PC or MAC audio mixer data processing during the data transfer from hard disk to interface.

Not drives are required for MAC or LINUX. Windows only required own driver.

Durob Audio is the distributor of Audia products in the BeNeLux. For more information please check the website of Audia HERE. The retailprice of the Audia Flight Three S is 2600,- Euro.

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PrimaLuna ProLogue Six “The Absolute Sound Editor’s Choice Award 2015″


TAS 2015The ProLogue Six is an EL-34 based vacuum-tube mono power amplifier, hand-made with the finest point to point wiring, using workmanship that is equal to or better than any product you can buy at any price.

The amplifier is built using finest premium parts. A toroidal transformer for the powersupply. Custom designed -in conjunction with one of the most prestigious transformer-designers in the USA- encapsulated output transformers for lowest hum, wide bandwidth for great bass and extended highs. Ceramic tube sockets. Nichicon and Realcap capacitors. Gold plated heavy duty speaker terminals and gold plated input jacks.It is enclosed inside a heavy gauge steel, fully vented chassis with five coats of finish. Each coat hand rubbed and polished.

PrimaLuna ProLogue SixThe Adaptive AutoBias™ circuit, an exclusive to PrimaLuna, monitors and smoothfully adjusts bias constantly and instantly, reducing maintenance and increasing performance because of a dramatic reduction in distortion. For extended life of tubes and switches plus a reduced chance of tube failure/shorts, the amplifier uses a soft-start circuit.

Tube plate fusing is used to protect the output stage. Other amps might need a trip to the shop if a tube fails. Not this one. Just plug in a new tube and fuse, and go

Check out www.primaluna.nl and www.primaluna-usa.com

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PrimaLuna ProLogue Five: The Absolute Sound Editors Choice Award 2015


TAS 2015Conclusion editor: 

The 36Wpc vacuum-tube- powered ProLogue 5 is more authorative than its rating would lead you to expect, and offers a warm, rich presentation, yet really does not sound “tubey” in any traditional sense, producing clean, deep, tight bass and grandsoundstaging. A synergistic match with the companion ProLogue 3 preamp. SR, 156

Information from the website of PrimaLuna

primaluna prologue 5The ProLogue Five is a KT-88 based vacuum-tube stereo power amplifier, hand-made with the finest point to point wiring, using workmanship that is equal to or better than any product you can buy at any price.

The amplifier is built using finest premium parts. A toroidal transformer for the powersupply. Custom designed -in conjunction with one of the most prestigious transformer-designers in the USA- encapsulated output transformers for lowest hum, wide bandwidth for great bass and extended highs. Ceramic tube sockets. Nichicon and Solen capacitors. Gold plated heavy duty speaker terminals and gold plated input jacks.It is enclosed inside a heavy gauge steel, fully vented chassis with five coats of finish. Each coat hand rubbed and polished.

The Adaptive AutoBias™ circuit, an exclusive to PrimaLuna, monitors and smoothfully adjusts bias constantly and instantly, reducing maintenance and increasing performance because of a dramatic reduction in distortion. For extended life of tubes and switches plus a reduced chance of tube failure/shorts, the amplifier uses a soft-start circuit.

Tube plate fusing is used to protect the output stage. Other amps might need a trip to the shop if a tube fails. Not this one. Just plug in a new tube and fuse, and go.

The ProLogue Five makes a great combination with PrimaLuna ProLogue Three.

Check out www.primaluna.nl or www.primaluna-usa.com.

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