LSA GroupHP-1newLSA Group HP-1 Our new planar headphones at intro deal6 MONTHS NO INTEREST THRU PAYPAL FREE FREIGHT IN THE LOWER 48 STATE ADD $25.00 FOR CANADA Our first headphone, LSA HP-1 is a typical LSA/Un...1299.00

LSA Group HP-1 Our new planar headphones at intro deal [Expired]

no longer for sale



                                 ADD $25.00 FOR CANADA

Our first headphone, LSA HP-1 is a typical LSA/Underwood product. It offers superb value coupled with great sonics. We searched the world for a quality phone that could offer at a great price to performance deal and are very excited to present the HP-1. They are a version of a $2200.00 pair of marvelous planar phones, made in Russia, the Odin, by Kennerton. We loved their sonics and had them tool a custom aluminum back plate that lowers weight by 90 grams, to 540 grams, as well as doing custom lacquer wood frames for us, over their standard $2200.00 version. We are selling them with our Low Overhead Internet Direct model at only $1399.00. Save an extra $100.00 during this intro sale. Compare them to any $2000-$2500.00 competition that we have heard.
The HP-1 offers the unique sound so much loved by planar headphones enthusiasts! Stunning detail and clarity combined with powerful and beautifully controlled bass. They lean to the warmer side of neutral versus the hyper detail of some other phones. They are great for long listening sessions

The HP-1 uses only high-quality materials – steel, aluminum, genuine leather and precious wood.

Driver Unit:  80 mm isodynamic, metalized polyimide 8μm diaphragm
Freq Resp: 15-50000 Hz

Sensitivity:  104 dB / 1 mW

Impedance:  40Ω

Cord length: interchangeable, with Mini XLR connectors, 2m included

Weight:  540g
Warranty: Two years  


In our eyes, we see the perfect headphone as a cross-breed of the dynamic and electrostatic technologies combined into one. Whereby taking the airy and extremely detailed sound of an electrostatic driver, and combining it with the power and impact of a dynamic transducers. The HP-1 is a sound that’s both natural and engaging.

When we looked at the market to see what our competitors have been producing in the last couple of years, we were surprised to find that the most recent planar magnetic headphones all had the same design and thus also shared the same flaws. This indicated to us that the 25-year old planar magnetic technology hasn’t evolved with time.

Our supplier got to the drawing board and started to make their own drivers from scratch. One of their core goals was to minimize internal structure resonances and optimize sound wave patterns, in order to create clear, low-distortion sound. To achieve this, they created several patent-pending core innovations. Its magnetic structure is designed to eliminate both unwanted resonances, and unify magnetic field distribution over the total frequency range.


The drivers are solely designed and produced in Russia, which involves a facility that also works for the aerospace and military industries, which ensures the highest quality and durability of our headphones.

  • A new 80mm planar-magnetic driver, with every aspect of this technology being implemented, such as phase coherence, flat impedance and a low-mass diaphragm.
  • Multi-layer 10µm polyimide film diaphragm, tested to have the highest reliability and longevity in the most extreme environmental conditions.
  • FEM-Optimized Magnet System with 10 neodymium magnets arranged in symmetric push-pull configuration.
  • Unique semicircular bar magnets.
  • A semicircular form therefore has many advantages over the ordinary rectangular shaped bar magnets: It gives a more uniform magnetic field, greatly reduces internal resonances and produces an optimal sound.
  • The driver allows greater sensitivity, thanks to its powerful magnets and low-mass diaphragm. It can therefore be easily driven by portable devices.

We aimed for reliability and durability along with great sound at an internet direct with no dealer profit cost.

Aerospace grade aluminum and steel is used.

Custom Quality wooden hi gloss ear cups were specified.

There is a complete absence of any plastic parts.


  • Aerospace grade aluminum and steel.
  • High-quality lacquer wooden ear-cups.


  • A strap-design headband which allows even weight distribution over your head.
  • Fine lambskin leather.
  • Soft ear pads, that creates a comfortable listening experience.
  • 6.6 foot cable with 1.4" phone jack (mini DIN connector) is included as is a nice carry case with shoulder strap.

2 year warranty

We accept PayPal, Visa, AMEX, Discover, MasterCard, bank wires & money orders. 

Read our over 13,300 points of AudiogoN #1 rated feedback and then call 770-667-5633 with questions or to order these excellent headphones. 
GA & HI residents add sales tax.

International sales are paid by bank wire transfer only.

Brands carried: Acoustic Zen, Ampsandsound tube electronics, Audeze phones, Audio Alchemy, Audio Space tube electronics, Black Ice Audio tube electronics, Bob Carver tube amp & loudspeakers, Burson Audio, Core Power Technologies A/V, Creek, Dan Clark headphones DSPeaker room correction, EAT Turntables, Emerald Physics speakers &, amplifiers, Focal headphones, Gallo speakers, Graham Slee, HifiMan phones, Iso-Acoustics, Jolida, LSA speakers, electronics, turntables & headphones Marantz Reference, Mofi Electronics, Musical Fidelity, Music Hall, Ortofon cartridges, Outlaw Audio, Peachtree Audio, Project turntables, Pure Audio Labs DAC's, Quad, Raal headphones, Rethm speakers, Scansonic speakers, Silverline Audio speakers, SoundSmith cartridges, Spread Spectrum Ampzilla amps & preamps, Sumiko cartridges, Sweet Vinyl pop & click filters, Syzygy wireless subs w/room correction, Wireworld, Wywires. Wyred 4 Sound, Zesto Audio tube electronics

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member since July 2000

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