Emerald PhysicsKC IIEmerald Physics KC II New speakers -FREE $500.00 BOMIntroducing the Emerald Physics KC II open baffle loudspeaker. Ask us about 6 MONTHS NO PAYMENTS or INTEREST thru PayPal Now shipping with a $500.00 Free Bass Optimization Module (BOM) for a ...1999.00

Emerald Physics KC II New speakers -FREE $500.00 BOM [Expired]

no longer for sale

Introducing the Emerald Physics KC II open baffle loudspeaker.

Ask us about 6 MONTHS NO PAYMENTS or INTEREST thru PayPal

Now shipping with a $500.00 Free Bass Optimization Module (BOM) for a limited time. The BOM extends the bass response to 35Hz and is adjustable for each users taste. Info is here:


We now have Emerald consumer demos for potential customers in:

Louisville, KY 40245

Wildomar, CA 92595


Lynchburg, VA 24503

White Plains, NY 10605

Alabaster, AL 35007

Los Angeles, CA 90046

Los Angeles, CA 90013

Newport Beach, CA

River Vale, NJ- This is near Saddle River; about 1.5 hours from the Princeton area, and about 2 -2.5 hours from Philadelphia

The KC II is our least expensive speaker and sets a new standard in value in high end loudspeakers. The KC II is 93Db efficient, runs off of one amp and does not need DSP to sound great.

In the first review in Audiophilia they summed with:  "The trickle down technology from the top Emeralds like the EP-2.8s to the new KCII is very effective. You'll get both very sweet and dynamic sound, transparency, a beautifully balanced midrange and a solid low end all for a very reasonable price. Very highly recommended."

"It is with great pleasure that we award the Audiophilia Star Component Award to the Emerald Physics KC II Open Baffle Speaker. Congratulations! – Ed "

Read the entire review at:


The KC II offers audiophiles true high end performance on a tight budget. Performance for the money is off the scale. But don't take our word for it. Here is a quote from a new customer:

"But the way I hooked them (KCII) up late last night and even though they haven't broken in, I have two words.   " holy shit".   Walter, this is a lot of speaker for the money!  Honestly, one of the best speakers I have heard at any price. This is hardly an entry level speaker.  Now I see why once you hear an open baffle speaker, it's hard to listen to anything else.  I love then , and the dsp,,,,  perfect!"

Here is a users post from Audio Asylum:

Posted by HiOnFi (A) on August 21, 2016 at 04:57:12

Wow, it's been almost 2 months since putting the KC IIs in my system, which has given me ample time to play music beyond the break-in period, including the late addition of the second amp.

Over the last couple days I have been spinning Van Morrison Greatest Hits, and very late last night, The Essential Leonard Cohen (2 discs)

Even at very late night low levels (1:30-4:30!) the KCIIs amaze in their ability to reveal a ton of 3 dimensional space with every bit as much speed and detail as I ever had through the Magnepan 3.5Rs. (I stuck with the Maggies for ~ 6 years, mostly for their 40"+ ribbon tweeters). While the mid/bass was clean, it lacked texture

The KC IIs inner detail is so good, I often found myself drifting towards the music, forgetting to pay proper attention to his powerful, often enlightening lyrics, which when listening to Cohen is "Essential". Consequentially, I found myself repeating tune after tune to catch up to his stirring and enlightening words.

At low levels, every instrument and back up singer had the proper location, space, and tone, but turn up the volume to a near live level and the music takes on a physical "They're Here!" quality

Through the Maggies I often felt like an observer. But with the KCIIs, I often feel immersed.

Cohen's songs took on a much deeper meaning as the musical arrangements so fit the words, weaving a phenomenal tapestry. "Democracy" could easily have been written today. Listening to "Take This Waltz", for the first time I paid attention to his modern interpretation of what a Waltz sounds like. I was Waltzing in my chair

And the BOM (bass management component) is 'the Bomb", at least here in my large room, it does a great job of integrating my two SVS Ultra subs.

Fine tuning the position of the left speaker (a mere 1”) helped solidify the center image

I will go out on a limb here and suggest that even if you already own much more expensive speakers, buy these and compare. Even if you take a paper loss selling yours to keep these, musically you could be miles ahead

Read the entire thread at: http://www.audioasylum.com/audio/speakers/messages/35/351535.html

Here is what the experts are saying


Best Sound (for the money): (Paul Seydor)

"Emerald Physics KCII speaker system ($2495/pr.) driven by  Emerald’s EP100.2SE  amplifier and Anti-Mode’s Dual 2.0 as preamp playing CDs from a modest Marantz player. This demo featured among the most involving overall sound that I heard at the show."

Read the report at:


In Other News (Robert Harley)

"Perhaps the best overall value at the show was the Emerald Physics KCII open-baffle loudspeaker system ($2499) driven by the company’s EP100.2SE hybrid power amplifier. The whole system was priced at just under $6k at retail, but offered at $3799. This system
put many five-figure systems to shame."

Read the report at:


Best of Show (Jim Hannon):

"Best Sound (for the money): A tie between the very spacious and natural-sounding Magnepan system with three Maggie .7 speakers ($1400/pair) driven by Bryston electronics, and the Emerald Physics KC II open-baffle loudspeaker driven by an EP100.2SE  100Wpc hybrid digital amplifier."

Read the report at:


Five Most Significant Products (Dr. Robert E Greene)

Emerald Physics KC II Loudspeaker "Emerald Physics was, as usual, showing exceptional products at really exceptionally low prices. In particular, the KC II open- baffle speakers at $2495 sounded very convincing musically and also looked spectacular, with an airbrushed faux wood finish that was to wood what Balthasar Neumann’s faux marble was to Baroque architecture—arguably more beautiful than the real thing. Emerald Physics was integrating its systems with DSPeaker’s room-correction and frequency-response adjustment devices. This seems to me very much the way that audio needs to go, offering as it does extraordinary—and adjustable—sound in domestically compatible packages at modest prices. People often wonder how serious audio can survive outside the 1% market. This is how."

Best sound for the money: (Dr. Robert E Greene)

"A tie between the Emerald Physics KC II, bringing really truthful sound in at really low prices, and the Lambert system for its unique naturalness, of vocal reproduction especially, with a footprint that is miniscule."

A wonderful report from The Audio
Traveler at:

The new Emerald Physics KC II is a 4 driver three way open baffle design with dual (2) custom 10" woofers and the custom Emerald Physics "Godzilla" 8" point source midrange/tweeter. It throws a large 3 dimensional soundstage and imaging is exceptional. Dynamics are extraordinary for a $2500.00 pair of speakers. They are easy to drive at 93Db efficient. The boxiness associated with all speakers in this price class is totally gone. Once you listen to an open baffle it is hard to go back to ordinary box designs.

Parts quality is superb throughout. Check out the photo of our crossover versus that of a competitive product.

Our intro price is $1999.00 for a limited time with a Free $500.00 BOM for the pair in black powder coat. 

These are amazing speakers for the price. Call to discuss these superb speakers at 770-667-5633.

The photos are of the optional custom hand painted black Tricoat finish, a $1200.00 option. Standard finish is black powder coat.  The Tricoat is on sale while available at 50% off.

Confirm freight cost before purchase as AudiogoN can't figure 2 speaker orders. Multiply times 2 and you will be close.

KC II Specifications 

  • System Type: Passive 3-way / 4-driver Dynamic Dipole  
  • Frequency Range: 45Hz–22kHz +/-3dB typical in-room response from target curve,
  • 35Hz with optional BOM (Bass Optimization Module) adjustable 4-pole Linkwitz Transform Function analog EQ. Free with purchase at $1999.00 for ltd time.
  • Frequency Linearity: +/- 1.5dB from 100Hz-20KHz from target curve
  • Impedance: 6 ohms nominal, 4 ohms minimum
  • Recommended power: 25-200 watt amps 
  • Max Power input: 150W RMS, 300W program 
  • Sensitivity: 93dB 2.83V @ 1M @ 1kHz 
  • Emerald Physics Screw-In 1 inch exit Titanium compression Tweeter
  • Emerald Physics Godzilla 8” Mid-Woofer/Midrange
  • 2 X Emerald Physics 10” paper cone Woofers w/ Dual Pleated Surrounds 
  • Crossover: Aperture Bass Propagation
    – Mechanical at 300Hz + 2nd order acoustic @300 Hz for the
    woofer,   4th order acoustic @1250Hz  for the tweeter
  • Dimensions: 41.25”H x 19.25’W x 13.25D at base on bottom
  • Weight: Net: 75lbs each, Shipping at 89lbs each box by UPS
  • All specifications and pricing subject to change


Buy with confidence from AudiogoN’s #1 rated dealer by feedback. Read our over 12,500 points of feedback.

We accept PayPal, Visa, Discover, MasterCard and money orders.
Call me at 770-667-5633 to discuss these excellent speakers.
GA & HI residents add sales tax.
Brands carried:
Acoustic Zen, April Music, Audio Space tube electronics, Audeze headphones, Auralic music streamers & DAC's, Bob Carver tube amps and loudspeakers, Burson Audio, Cambridge, Creek, DSPeaker room correction devices, Emerald Physics speakers, amplifiers & DAC’s, Epos, Exogal DAC's & amplifiers, Furutech ADL, Gallo speakers, Graham Slee, HifiMan headphones, Jolida tube electronics, LSA Speakers, Lehmann phono stages,  Marantz Reference, Micromega, Music Hall, Mu-So by Naim. Ortofon cartridges, Peachtree Audio, Project turntables, PS Audio,  Quad, Scansonic speakers, Silverline Audio speakers, SOTA turntables, Spread Spectrum Technologies Ampzilla, Sumiko subwoofers & cartridges, TriangleArt turntables, Wireworld, Wyred 4 Sound, Wywires

Sales policies on the Underwood Hifi Inc. website at www.underwoodhifi.com

Seller Information

Underwood Hifi, Inc.  Verified Dealer

Last 12 months

Member since November 2009