GLOW Amp One Single Ended Tube Amplifier - Standard Version

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Single Ended Bliss

"Simply silly brilliant." -Srajan Ebaen,



Proud Recipient of the 6 Moons "Realsization" Award



"What do I like about the GLOW Amp One? Pretty much everything. Quite simply I have never heard my recordings sound more real... on old familiar vinyl I experienced a kind of presence that was downright spooky. The GLOW Amp One is a Hi Fi epiphany."

-Dr. Jeff Rabin,




"Smart, small and eye-catching design with a sweet, open sound and plenty of detail...

...a fine effort from GLOW Audio"  


"The Amp One from GLOW Audio is an amazing feat. I've never seen point to point wiring at this price.

The amp is a solidly constructed piece of equipment weighing in at around 20 lbs. And oh yes, the sound is gorgeous.

The single-ended design eliminates the crossover distortion that hampers many tube amplifiers at this price range.

The amp put out a pleasing and rich sound on Paradigm Mini Monitors and Polk Lsi9 bookshelf speakers.

With Sennheiser HD600 and AKG 702 headphones ... the Amp One is also the best tube headphone amplifier I've heard."

-Derek Brooks, The Audiophile Journal



To view a photo album of the GLOW Amp One, click HERE


We build handcrafted stereo amplifiers with the purity of sound that only a thoughtfully designed and well assembled tube amplifier can provide. Get the sound quality you've been missing, with the simplicity and style you want. The GLOW Amp One is meticulously designed to please the eye and the ear, at a price you can afford.

VERSATILITY: The GLOW Amp One is a classic stereo tube amplifier that easily integrates with streaming devices including bluetooth receivers, DACs, high definition televisions, Amazon Echo and Show devices, Sonos music systems, and most any music or video source device that allows for RCA and/or 1/8" headphone outputs. If you have any questions regarding integration of streaming devices with the GLOW amp let us know... we are happy to assist in making it easy (for example your HDTV may require an optical converter and your Echo Show may require a bluetooth receiver in order to connect with your GLOW amplifier, easy and inexpensive ad-ons we can assist you in selecting). Connecting your digital devices to your GLOW amplifier will give you audiophile grade sound quality with the convenience of cloud streaming. You can also of course use your computer as a hifi music source, playing music stored in your hard drive, and traditional analog sources such as turntables, tape decks, and CD players sound amazing with the GLOW Amp One.  Regardless of the input source, be prepared to be amazed with the breathtaking realism provided by this high quality single ended tube amplifier.

The Amp One has the smooth, silky and detailed sound for which good single ended tube amps are famous. If you have never heard a high quality tube amplifier, prepare to be startled by the subtle musical details the amp reveals. By design, single ended tube amps are low power, with high resolution.

Matched with efficient loudspeakers, the GLOW Amp One can produce the most natural sound imaginable.

Or, use the GLOW Amp One as a headphone amplifier (standard audiophile 1/4" headphone jack included),and experience an incredible level of realism and detail. The headphone signal is stepped down directly from the amp's output transformers, giving you a silky smooth and non-fatiguing sound via headphones.

You will enjoy your music as never before. Or your money back.

Our promise to you: Our GLOW Amp One will sound and perform as well as or better than equipment costing twice as much. If you don't agree, simply return within 30 days for a full refund of your purchase price.



The Amp One in White


NOTE: The ring around the volume knob subtly and slowly changes colors while the amp is in operation.


Close up of Amp One Tube Cage.



The GLOW Amp One Features:

  • Removable tube cage included with all amplifiers
  • 2 RCA source inputs (switchable)
  • Single ended (SE) Class A pentode design
  • EL84 power tubes*
  • Ceramic Tube Sockets
  • All point-to-point wiring
  • High quality transformers
  • Minimum use of negative feedback
  • Tubes are self-biasing and never need adjusting
  • 1/4" Headphone jack
  • ALPS volume potentiometer
  • High quality binding posts
  • High Gloss Enamel paint with anti-corrosion undercoating
  • Steel chassis
  • Full one year warranty against defects
  • 110-220 V switchable, fuse protected
  • CE certified in compliance with European Economic Area (EEA) requirements



The GLOW Amp One can be purchased in the following colors:


Red, Silver, White, Yellow, Black and Black-on-black.

NOTE: As of July 1, 2023, units in Silver and White are out of stock. 




  • Speakers: 4Ω~8Ω
  • Earphone: 32Ω~600Ω
  • OUTPUT POWER: 5W x 2 at 1KHz
  • Earphone: 600mW
  • T.H.D: <1% (1W)
  • S/N: >89dB
  • VACUUM TUBES: 6N3 x 2, EL84 x 2
  • Switchable: 110V/220/230V AC, 50~60Hz
  • DIMENSIONS (L x W x H): 11.5" X 5.5" X 6" (238 mm x 138 mm x 148 mm)
  • LINE IN TERMINAL: RCA stereo Connectors x 2
  • SPEAKER TERMINAL: Binding posts x 2
  • ACCESSORIES: Power cord x 1
  • HEADPHONE JACK: Stereo (6.35 mm diameter)
  • WEIGHT: Net Weight: 14.33 lbs. (6.5KG)
  • Shipping Weight: 16.5 lbs. (7.5KG)

Specifications are subject to improvement without notice or obligation.


Each tube amp comes with a removable matched steel tube cage.


The GLOW Amp One is CE certified and meets all the essential requirements of the relevant European Directive(s) for sale throughout the European Economic Area (EEA).


If you have any questions regarding compatibility of your amplifier with any particular make of tube, email us.