KRELL Foundation 4K UHD preamp withCHORUS 7200 power amp amazing set-up!KRELL Foundation 4K UHD preamp with CHORUS 7200 power amp amazing set-up! Best HT amp/pre-pro on AudiogonFor Sale is lightly used by audiophile/professional ONE Foundation Processor ONE 7 channel power amp - Helping out a customer who lost his job, home and marriage - he's taking a huge loss b...9388.00

KRELL Foundation 4K UHD preamp with CHORUS 7200 power amp amazing set-up! Best HT amp/pre-pro on Audiogon [Expired]

no longer for sale

For Sale is lightly used by audiophile/professional

ONE Foundation  Processor

ONE 7 channel power amp -

Helping out a customer who lost his job, home and marriage - he's taking a huge loss be kind reasonable offers' will be considered


"My initial impressions of the sound via the Foundation were exceedingly positive: the balance was really satisfying, and images stood firm against a background of absolute inky black."


Sound & Vision

"The Foundation maintained the clarity, dimensionality, and ease of even the most timbrally complex, dynamically challenging passages "


Home Theater Review

"It's hard to do better than the Krell Foundation AV preamp in terms of performance. "


Home Cinema Choice

"Its performance is stunning in every conceivable acoustic respect, and I never thought I would say that about any AV hardware, period.""


Stars of CES 2013

"A product that promises the high-definition, 7.1-channel audio prowess to match its looks. If it's state-of-the-art surround-sound processing you want"


Flashes of Brilliance

"Speaking of runaway favorites, one of the more exciting developments at CES 2013 didn't take the form of an UltraHD display but rather an AV preamp courtesy of American electronics manufacturer Krell"


Krell has made a bold statement in the AV preamp market with its latest offering. At $6,500, the Krell Foundation preamp represents the first true high-end HDMI AV preamp designed to meet the needs of the audiophile while staying well under the $10,000 price point since, say, the Sunfire Theater Grand products or Meridian G-Series AV preamps of the recent past.

Krell first showed the Foundation preamp at the 2013 Consumer Electronics Show to much fanfare and excitement. wasn't the only publication to gush over the unit, but we were first to get our greedy hands on a review sample. The Foundation was shown with a matching high-end media server called the Connect, which is currently shipping. It's roughly described as a Roku on steroids with an audiophile bent, which is meaningful to the Foundation, as the Connect afforded Krell the ability to keep things more simple in the preamp - which is a refreshing design philosophy in this category.

The Foundation boasts...get this...10 HDMI 1.4a inputs. People, that's a lot. How many sources do you have that use HDMI? Perhaps more than four, but 10 covers you for pretty much every conceivable source component that you could possibly own today. Let's say you are rocking a complex, modern system that includes a Blu-ray player, an Xbox and a PS3, a cable or satellite DVR, an Apple TV, and a Roku, but you also want room to add, for example, a RedRay player, the new Kalidescape server, and one of Sony's new Ultra HD servers. With 10 HDMI inputs, the Foundation has you covered. How about HDMI outputs? Krell thankfully packs two of them, which both include ARC (audio return channel) to give you full access to the source-like features of your HDTV, such as Netflix, CinemaNow, and so on. The Foundation also includes other legacy inputs, such as composite video (3) and component video (2). Analog audio outputs include a full array of both balanced (XLR) and unbalanced (RCA) outputs; thus, no matter what amps you plan to connect the Foundation preamp to, you are set.

The look and feel of the Foundation follow a simpler path than more expensive products from Krell's past. The aesthetic is unquestionably Krell, but the unit now comes in one finish - not a choice of silver or black facades. This is one of the key ways that the new Krell can keep costs down; it doesn't have to stock both colors. The company also "pulled a Vizio" by skipping me-too features like an internal video processor. Your HDTV or projector likely has a killer video processor. I know every top HDMI receiver has one built in that can "scale to 4K" but, respectfully, you don't need to be doing such up-conversion in your AV preamp. Instead, the Foundation passes the signal through bit for bit without any processing. Krell focused on what was important: lots of inputs and outputs. expensive power supplies, top-notch internal parts and so on

CHORUS 7200 Power amp

Krell is cranking out a whole bunch of new components for the audiophile crowd at this week’s 2014 CES, The company just announced iBias, a patent-pending new technology that uses Class A circuitry.

However, the hook on this new tech is that it uses a lot less energy than your typical Class A amp. It also boasts low-level details and spatiality, with no crossover distortion.

At launch, the iBias line will have a total of seven amps, each of which is built into a 3U-high (5.25 inches) chassis that has removable rack-mount ears. That collection includes two monoblocks (Solo 550 and Solo 375) and two stereo amps (Duo 175 and Duo 275), as well as three-channel (Trio 275), five-channel (Chorus 5), and seven-channel (Chorus 7) models.

“The iBias amplifiers have the rich, lush, elegant midrange and top end that Class A is known for, with the superb bass and dynamics that has defined the Krell sound,” said Bill McKiegan, president of Krell Industries. “iBias brings audiophile sound to integrators and the custom market, with the convenience features and energy-efficiency they need today. And while audiophiles will find them to be among the most musical amplifiers ever made, they’ll also find that their compact size and cool operation make them much more practical to own than most high-end amplifiers.”

According to Krell, an iBias amplifier has a circuit that can continuously measure current flow through the component’s output transistors. That way, it instantly adjusts the power (or bias) going to the transistors to suit the demands. The output transistors never shut off, yet very little power is wasted as heat. It should even run cooler!

“The iBias amplifier is like a high-efficiency 12-cylinder automotive engine in which some of the cylinders shut down when you don’t need all that power,” McKiegan explained. “Just as that engine can run efficiently yet deliver 600 horsepower in an instant, the iBias amplifier can run efficiently yet in a matter or microseconds gives you hundreds of watts of full Class A bias for musical peaks.”

Each iBias amp also has Ethernet capabilities, so users (and dealers) can access the amp through a smartphone, tablet or component.

Krell has started shipping the new iBias amplifiers, with more coming later this month. According to Krell, the model numbers of the amplifiers indicate their power in watts RMS per channel into an 8-ohm load. Here is the full iBias lineup:

  • Duo 175 (175 wpc stereo): $7,500
  • Duo 300 (300 wpc stereo): $9,500
  • Chorus 5200 (200 wpc 5-channel): $7,500
  • Chorus 7200 (200 wpc 7-channel): $9,500
  • Solo 375 (375 watt monoblock): $8,750
  • Solo 575 (575 watt monoblock): $11,250
  • Trio 300 (300 wpc 3-channel): $11,500

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