Skip to content
Our store will be closed 12/24 - 12/25 and 12/31 - 1/1. You can still place online orders. | Check us out on Youtube! | Call us at (480) 207-1511.
Our store will be closed 12/24 - 12/25 and 12/31 - 1/1. You can still place online orders. | Check us out on Youtube! | Call us at (480) 207-1511.

Country

Integra ADM-2.1 Stereo Power Amplifier Wide Range

Sold out
Original price $499.99
Original price $499.99 - Original price $499.99
Original price $499.99
Current price $249.99
$249.99 - $249.99
Current price $249.99

Power your audio system with the sleek and robust Integra ADM‑2.1, a 2-channel power amp built on Onkyo's respected WRAT (Wide Range Amplifier Technology) platform. With 100 watts per channel into 8 Ω, it delivers punch, clarity, and reliability—ideal as your main amplifier, second-zone powerhouse, or dedicated receiver substitute. With its high-end internals and thoughtful features, the ADM‑2.1 combines power, precision, and automation-ready design in a compact chassis. A terrific value for anyone wanting pro-level amplification.

CONDITION

SPENCERTIFIED- Fully certified by Spencer

Refurbished and SPENCERTIFIED

This Integra ADM-2.1 stereo power amplifier is in excellent condition, both functionally and cosmetically. It has been fully tested and delivers clean, powerful output on both channels with no distortion or noise. All controls and inputs are working properly, and the trigger and auto-on functions operate as intended. Cosmetically, the unit is clean, reliable, and ready for integration into your system.

Cosmetic Condition: Very Good.

Functional Condition: Works Like New

WHAT'S IN THE BOX?

  • Integra ADM-2.1 Stereo Power Amplifier
  • Power Cord

Other information about the Integra ADM-2.1

  • 100 W RMS per channel (8 Ω, 20–20 kHz, 0.08% THD) provides dynamic, distortion-free performance 
  • WRAT design with discrete output transistors and Nichicon Muse filter capacitors for detailed, high-current audio delivery 
  • Wide frequency response: 10 Hz–100 kHz (±1 dB) for full-range playback 
  • High signal-to-noise ratio (110 dB) and a damping factor of 100 ensure clean output and tight speaker control 
  • Auto turn-on modes: Audio-sensing or 12 V trigger with selectable trigger input for seamless integration 
  • Input/output loop enables chaining amps for multi-room setups without extra gear 
  • Robust protection circuitry guards against overload and short circuits
  • Clean, minimalist chassis in black or silver; 2U rack height—ideal for separates integration
  • Sturdy metal construction with heat sink cooling for reliable performance
  • Front-panel ON/STANDBY indicator with hidden controls behind a protective shield
  • Main system amplifier for bookshelf or main speakers with effortless drive
  • Zone‑2 amplifier in distributed home audio setups, controlled by trigger or audio sense
  • Home theater booster, powering front or surround speakers with high current fidelity
  • Audio/video production and recording, where accurate signal transfer is essential
  • Adjustable Input Level knob for fine-tuning gain to your system 
  • Heavy-duty speaker binding posts support 6 Ω and up—allowing banana plugs or bare wire

DIMENSIONS

  • Width: 17.1″
  • Height: 5.7″
  • Depth: 12.4″
  • Weight: 18.7 lb

INPUTS

  • Analog Audio L/R x1 (back)
  • 12V Trigger x1 (back)
  • AC Inlet x1 (back)

OUTPUTS

  • Analog Audio L/R x1 (back)
  • Speakers L/R x1  (back)
  • Trigger x1 (back)

MANUFACTURER

  • Made in Malaysia

Testimonials

Spencertified is a dream for anybody looking for quality vintage electronics that can include a warranty. Relive your youth and enjoy the nostalgia of reel to reels, VCRs, Betamaxes, 8 track players, CD carousels, vintage and bluetooth stereo receivers, laserdisc players and much more. Quality brands like Pioneer, Sony, Magnavox, are in abundance. Spencer is gracious, professional, and beyond knowledgeable. Stop in for a visit you won’t regret!!Reply

Glenn John

New to the hobby. They went above and beyond I feel!! Can’t wait to make my next purchase!!

Josh J

Bought a equalizer at this place that offers older newer electronics for reasonable prices .... A blast from the past that look all new again.. met Spencer good guy who will treat you honest and fair 🤓😎....Kool I'm happy and I know you will be to... 😎

Merle musicinme

My Sony 400 disc player stopped working. I watched YouTube videos and came across this website. Since 90% of failures are the belts I decided to try to fix it myself with the help of the video. It was the belts and after installing them it works great again. I received the belts really quickly and with no prior knowledge took the case off with help from the video and installed the belts myself. So happy to have my player working again. I will always contact Spencertified for my parts and repair needs. Thanks so much. Try them, you won't be disappointed.

Henry Nash

Spencer and Amy helped us find 40 or so speakers to build a wall out of them at a restaurant and were super helpful finding and loading up all of the speakers. The wall turned out great and would definitely recommend them for anything sound!

Tommy Sims

A very nice outfit to do business with; Product was just what I was looking for, ( am/fm tuner) reasonably priced, nice friendly correspondence with Amy, they've got it all, I'll likely be back sooner than later... Thanks folks!

Jeffrey Jordan

Awesome service, helped me find what I was looking for. Knowledgeable and hooked us up!

Micah Murray

Awesome! I love this place, the guy is really nice and has amazing stuff. Great deals, best in the valley by far.

Thomas McEntire

SPENCERTIFIED IS PERFECT FOR ME!
I JUST GOT WHAT I WANTED FROM FRIENDLY UNDERSTANDING SOUND PEOPLE!
Visit this shop for sweet deals on receivers, multi-disc CD players, turntables and all of your stereo and surround sound speakers and components.(they had many options, new stuff and older vintage too.)
REALLY! It was cool to do business with honest people who listened and gave me just what I was looking for. I asked a lot of questions about equipment and was shown different options, and, different prices, straight forward and honest.

Phil D

Spencer was super helpful and knowledgeable when I visit him. I experienced a slight issue with some hardware and he was more than willing to make it right. As a nice gesture he gave me a slight upgrade to the equipment I was purchasing. He’s very reasonable and enjoyable to work with! Highly recommend!

VSefcovic

Spencer is extremely knowledgeable and the selection is vast. GO down there! You wont be sorry!

EV B

A SpenCertified Short Film

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare