Ask us about 6 months NO INTEREST thru PayPal

      FREE FREIGHT in the USA or CANADA

Our new LSA Discovery Warp 1, 150wpc stereo amp, is the sonic class leader at its price point. It outputs 250 watts at 4 ohms. Is is 2 ohm stable as well.  The Design is finished and is now shipping.

See the latest Part time Audiophile review at:  PTA review

See the Thomas & Stereo youtube review here:  Thomas & Stereo review

We sent on amp to the Netherlands to a customer who saw the above review. He posted:
 

"We have had some more time to listen to the Warp 1 and we get to love it more every day. My wife and I decided that the Purifi amp can go, so that one is now up for sale. The Warp 1 emits more energy in a way. The sound is more powerful, more full bodied and also more 'phase correct' than the old amp. Were we used to have 'peaks and dips' when walking around the room with the old amp, that is far less the case with the Warp 1. It is amazing, but even if you stand beside or even behind one of the speakers, the stereo image is still kind of intact. You can literally walk through the room and the sound will not change that much. Also the presentation is more relaxed, with darker backgrounds and very smooth."

"It is really difficult to describe, but at them moment listening to Numinous by Those Who Ride With Giants and the presentation is so smooth and relaxed, yet full and energetic at the same time. There are for sure better amps, as in more powerful or more neutral, but this one sounds so freakin' fine in our setup. So the experiment was successful and we are very happy with the amp in our setup."
Thanks @xrk971 for designing this amp.
BR,  Richard

The first review is from Tone Audio summed with:
"Consider my attitude changed. The LSA Warp One is a great amp, period. Class D has matured, and very well I might add. For $1,195, we’re definitely awarding this baby an Exceptional Value Award. Job well done."

Read the entire review at:  https://www.tonepublications.com/review/review-the-lsa-warp-1-power-amplifier/

In the new StereoTimes review they say:
"Is the Warp 1 a perfect amplifier? No, few amplifiers might be considered that, and those recommendations would still come with caveats." "What the Warp 1 does for its mere $1499 price (Sale Priced at $1199) is extraordinary, delivering weight and dynamics in a musically satisfying way that defies its price category."
"The Warp 1 doesn’t sound at all like any of the Class-D’s I’ve experienced to date – It’s a big step forward from its predecessor, the EP 100.2SE, which I also enjoyed in its day. While I have minor quibbles, its errors are those of omission, not commission. The Warp 1 is as engaging as it is affordable, an amp that offers a surprising amount of air, ease, and musicality for extending listening enjoyment. While we don’t get many visitors these days due to COVID, both of my audiophile friends who stopped by to hear the Warp 1 said they wanted one."

Read the entire review at: http://v2.stereotimes.com/post/lsa-warp-1-power-stereo-amplifier-by-greg-voth/?fbclid=IwAR1tAt4KSWwk48EUjO8QCTCI7rvtMM2DmySTK5JYU_6NbBTIS3MBZNZAEL4

The Warp-1 amp utilizes the class-leading Texas Instruments TPA3255 "Purepath" Class D amp Reference Design as our initial inspiration, but with extreme care in the layout design and choice of high performance components to ensure that the amp operates at its true potential. 

The state of the art layout was made using double planes stitched together with thousands of vias wherever an ultra-low impedance path was needed.  We do this to ensure extraordinary signal transfer which gives you ALL The Music and Dynamic Contrasts.

Attention was paid to keep current loop areas as small as possible. Power input paths were kept as short as possible as well.  The signal integrity is our primary focus here. Paying attention to these parameters yields phenomenal low noise for Blacker Blacks and Deep Soundstage that will amaze.

The ground paths were designed with a star hub topology (note that the power entry jack is in the middle of the board).  Ultra-high current low distortion CoilCraft flat copper wire SER shielded inductors for the output filter provide unfettered current flow while ensuring the minimum in distortion.  These are techniques found in Amplifiers at 5 x the price.

The PCB is an extra thick 2mm FR4 with 2oz (70um thick) copper traces and electroless nickel immersion gold (ENIG) finish. 

All of these finer points add up to a sum that is greater than its parts, thereby yielding a Class D amp that sounds dynamic, engaging, natural, and non-fatiguing… so you therefore get a product that performs at many times it’s price --- but most importantly honors the Musical Event in a very real way.
 
The Class D amplifier is just the core, and it must be supported by a state of the art low-noise power supply and buffer preamp, both of which are custom made for Warp-1.  An oversized 600w switch mode power supply provides the amplifier with an abundance of power on-tap without a hint of hesitation.  Bass Slam will delight you track after track.
 
The Warp-1 is fully balanced and has a custom made signal input buffer that accepts either balanced (XLR/TRS) or single ended (RCA) sources and utilizes our choice for best results --- the superb sounding state of the art Texas Instruments OPA1656 operational amplifiers for signal conversion and amplification.  The buffer has a DIP switch that allows selectable gains to match any source. 
 
These components and techniques combine together to yield an amplifier that has a performance in the rarified air of 130dB signal to noise ratio. Even without a source playing, the Warp-1 will be absolutely silent with the ear pressed to the speaker cone - you cannot tell the amp is turned on unless the LEDs were glowing.  This amp can be used in every type and sort of High Performance Audio System with spectacular results.
 
The Warp-1 amp redefines what an affordable amp can sound like.

THD+N @ 1kHz at 50W

< 0.0027% into 10 Ohms

< 0.0057% into 5 Ohms

• 14" wide x 10" deep x 3" high
• MAXIMUM AUDIO OUTPUT CURRENT:  17 A peak, per channel, both channels driven
• INPUT SENSITIVITY
• Low-Gain = 2.7 Vrms, Gain = 22 dB
• Mid-Gain = 1.4 Vms, Gain = 28 dB
• High-Gain = 0.55 Vrms, Gain = 36 dB
• Gains Selectable via DIP Internal Dip Switches on Input Buffer
• INPUT IMPEDANCE: 25 k Ohms (Single Ended or Balanced Inputs)

 
   PROTECTION CIRCUITS                      

• Fully Electronic, No Relays
• Mute Sequencing
• Distortion Detection (Clip Warning)
• Short Circuit Protection
• Over Current Protection
• Over Temperature Detection and Protection
• SOA Detection (Output device safe operating area)
• PSU Fault Protection

SNR & DYNAMIC RANGE: Rated output relative to output noise, inputs shorted: 115 dB

NOISE VOLTAGE: Output noise voltage, inputs shorted:  -119dBV, 1.1 uVrms

All units come with the 3-year LSA factory warranty.

We accept PayPal, Visa, AMEX, Discover and MasterCard as well as money orders.
Read our AudiogoN #1 rated feedback & call me at 770-667-5633 w/questions or to order.
GA & HI residents add sales tax

Brands carried: Audio Alchemy, Audio GD electronics, Audio GE speakers, Black Ice Audio tube electronics, Bluesound servers & music streamers, Bob Carver tube amplifiers, Core Power Technologies A/V power conditioners and cables, DSPeaker room correction products, EARMEN portable products, EAT Turntables, ELAC speakers, Emerald Physics Loudspeakers & amplifiers, Focal headphones, HifiMan headphones, Iso-Acoustics, LSA Speakers, electronics, turntables & headphones, Marantz Reference, Martin Logan speakers & subwoofers, Melco servers, Mofi turntables, Music Hall, Musical Fidelity, Ortofon cartridges, Peachtree Audio, Project turntables, Quad speakers & electronics, Raal-Requisite headphones, Sendy headphones, SPL Electronics, Sumiko cartridges, Sweet Vinyl pop and tick filter, Wireworld & Wywires cables, Zesto Audio tube electronics

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