https://acousticresearchspeakers.net Tue, 08 Sep 2026 22:01:45 +0000 en-CA hourly 1 https://wordpress.org/?v=4.1.1 https://acousticresearchspeakers.net/2026/09/boss-ac-22lx-acoustic-amplifier-2/ https://acousticresearchspeakers.net/2026/09/boss-ac-22lx-acoustic-amplifier-2/#comments Fri, 04 Sep 2026 21:50:43 +0000 https://acousticresearchspeakers.net/2026/09/boss-ac-22lx-acoustic-amplifier-2/ read more »]]>


Pre-Owned Gear & B-Stock. Boss AC-22LX Acoustic Amplifier. The AC-22LX presents a new concept in acoustic amplification, bringing you a full-immersion playing experience realized through advanced BOSS spatial technology. Air Feel breathes life into the dry, sterile sound of standard acoustic instrument pickups, recreating the richly detailed tones captured by classic stereo acoustic microphone setups in world-class studio settings. The AC-22LX’s inspiring voice projects far beyond its compact size, infusing your amplified sound with depth, dimension, and natural acoustic resonance. Premium Amplification for Acoustic Stringed Instruments The AC-22LX offers amazingly natural sound reproduction in a portable stereo amplifier. The compact and attractive cabinet is equipped with two custom twin-cone speakers, providing expansive stereo tones for home playing. Capturing Natural Acoustic Sound Many elements contribute to the rich, complex sound of acoustic stringed instruments, including the soundboard, body resonances, and more. In recording situations, stereo microphone setups are used to capture this combined sound along with the surrounding room ambience. Using a variety of time-tested techniques, an experienced audio engineer will carefully position the mics to create the right balance for a song or playing style. Unfortunately, instrument microphones are not practical for most amplified playing situations due to feedback and other issues. The Air Feel technology in the AC-22LX erases these limitations, bringing authentic studio microphone sound to acoustic amplification for the first time. Simply plug in and enjoy your instrument’s natural acoustic character at performance volumes-without the need for microphones and audio engineering skills. XY-Recreates a coincident pair technique that uses two mics placed in an XY pattern. This focused stereo sound provides a good balance between the strings and body resonance, making it ideal for rhythmic chord strumming and muted playing. AB-Recreates a spaced-pair mic technique for a wide stereo sound with naturally expanded acoustic resonance. This big, full presentation is great for solo guitar and fingerpicking styles. ORTF-This special stereo mic technique combines elements of the XY and space-pair approaches. It produces a focused tone with increased depth and body resonance. Mid-Side-This classic technique produces a well-defined sound with a wide stereo spread. It adds a sense of distance, providing a nice ensemble blend with vocals and other instruments. Powerful Sound-Shaping Tools Along with five Air Feel settings, the AC-22LX’s Guitar/Instrument channel features a three-band EQ plus reverb and combined reverb/chorus effects for additional spatial depth. The XLR Mic channel has selectable phantom power for condenser mics, plus a two-band EQ and dedicated reverb for independent processing. With 15 onboard memories, you can save and recall setups for different songs and instruments. The AC-22LX Editor provides even deeper control, allowing you to change out reverb types, access detailed effect parameters, and much more. Built-In Rhythms The AC-22LX includes an onboard Rhythm Box to liven up practice sessions and enhance live performances. Five instrument types include percussion and full drum set sounds, all infused with BOSS spatial technology that fills the surrounding space with vibrant rhythmic energy. Choose from 15 different patterns, and then set up the perfect groove with the tap tempo button. And if you need something beyond the onboard selections, you can customize patterns with 119 variations in the AC-22LX Editor. Perform, Record, and Stream With its versatile analog and USB connectivity, you can send the AC-22LX’s sound output to a PA system, recorder, or streaming application, complete with Air Feel processing and spatial rhythm tones. Perform in any venue, from small clubs to concert stages. Capture natural-sounding acoustic tracks in your DAW without the hassle of using microphones. Or livestream performances directly to your social media channels. The analog line output supports mono or stereo operation, while the USB connection has a convenient Loopback function for monitoring sounds from a computer. Expanded Performance Control There are a variety of available options to extend the AC-22LX experience. A rear-panel jack supports up to two footswitches, providing access to rhythm start/stop, control of the onboard looper, and other assignable functions in the AC-22LX Editor. Installing the Bluetooth® Audio MIDI Dual Adaptor unlocks even more possibilities through wireless connectivity. Control additional functions with an EV-1-WL Wireless MIDI Expression Pedal or FS-1-WL Wireless Footswitch. Wirelessly stream music from a mobile device and play along. Or use the iOS/Android version of the editor for cable-free parameter control. Merchandise and packaging MUST be in the same condition as when received. Alto Music reserves the right to refuse any return if it appears the item has been used. Software (if unsealed or registered). Harmonicas, Mouthpieces, Earbuds/Earphones/Headphones(if unsealed), or any item that may come in contact with the mouth, ears or nose. There are no warranties for the following items.

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Bedford Vintage H-Fi is primarily known for its offerings of “Silver Era” components and systems – I rarely offer the components with a black hi-tech look- that came to dominate the market from the mid-1980’s onwards. It is not just a matter of cosmetics – build quality, circuit design, aesthetic principles and characteristics sonics all underwent a very marked change and few of the newer components appeal to us. But in some cases manufacturers simply changed the finish from silver to black, retaining the build quality and clean minimalist designs that they introduced in the 1970’s. It is hard to find better small amplifiers, past or present. In the 1980’s Kenwood began to use manufacturing outside of Japan for some models, black cosmetics became the norm and shortly thereafter the minimalist aesthetic was replaced with a more cluttered, feature-laden design. The amplifiers were certainly more powerful and generally quieter with improved transient response. But the overall sound lacked the appealing warmth of their 1970’s models and build quality was definitely lower. The KA-32/ KA-32B were 35 wpc entry level amplifiers from 1984 and they mark a transition point between the older and newer models. They offered good value and basic features in a low profile enclosure 16.5″ x 3.5″ x 10.5 with minimalist controls. The lighted switches are definitely late 1980’s bling but thankfully they are not too distracting. You do get phono, tuner and aux inputs plus tape and tape monitoring, 3 AC outlets (1 unswitched) and twist- lock connectors for 2 pairs of speakers. Reviews generally don’t have any high praise for this amplifier, but it is a Kenwood that was still made in Japan so it deserves a bit of respect for reasonable power. Good performance and very good value. With good specifications for low distortion, low noise and wide frequency response, this amplifier is a good match for many entry level small speakers. The AR-208V was a very compact two-way acoustic suspension design with a 5.25″ long-throw woofer and a 3/4″ dome tweeter in a 10.7″ x 7.25″ x 5.75 enclosure. It was a smaller take on of my favorite small speakers – the now hard-to-find AR-8B from the mid-1980’s. Back in the day that speaker was described as a very attractive choice for budget priced systems where space is limited… A remarkably good sound reproducer… Filled the room with a sound that totally belied their size and price. Much the same could be said about the AR-208V which offers an upgraded tweeter. AR brochures sum up its performance as: full-range sound from an incredibly small package. In the 1960’s Acoustic Research and KLH were dominant brands in the US hi-fi market. Acoustic Resaearch’s AR-4x remained a popular budget speaker into the 1970’s. The “original” AR designs were replaced in 1966/1967 by a new lie with tthe Teledyne/AR branding. It was fashionable at the time to look down upon these new models. Their cheap enclosures were definitely a step downmarket but these post-classic AR models deserved more respect. The acoustic suspension models introduced in the early 1980’s were very good inexpensive speakers boasting an acceptable and controlled low end, wonderful midrange detail, a more extended and pleasing top end and very good overall balance. Over the past 15 years they have regained a better reputation as remarkably good. Among those contributing their talents in those years was Ken Kantor, a brilliant M. Graduate who had worked for AR before founding his own highly regarded speaker company, NHT, in 1986. Reviewers loved the new AR models, particularly the 302 and 303 which had heavy input from Kantor. But commercial success was limited and in 1996 another ownership change took place and AR would never again regain its glory. Thankfully after 1989 there were a few AR small speakers of good quality that were worthy successors to the AR-18, AR-18B and AR-8B. AR in the UK collaborated with the US on the Spirit line of speakers(112, 122, 132) just as the Jensen takeover was in the works. And in the mid-1990s the AR-208, 218 and 228 were also fine compact speakers. The AR-208V in this listing perform very nicely. They have a bit of cosmetic wear and tear on the cabinet edges. The system as a whole offers surprising full sound from such small components.

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This item has been serviced. It has been cleaned inside and out. All controls and switches have been cleaned. Soldering has been checked and redone if needed or common practice. Relay has been serviced (if applicable or necessary) and any lamps/indicators replaced if needed. This ensures the you will receive an item that works perfectly as intended and looks as good as possible. Comes without remote/accessories unless stated otherwise. Fully tested and in perfect working order. Cosmetic condition: Please inspect the photos. Tuning range: FM, MW. Power output: 40 watts per channel into 8? (stereo). Frequency response: 20Hz to 20kHz. Total harmonic distortion: 0.03%. Input sensitivity: 2.5mV (MM), 150mV (line). Signal to noise ratio: 75dB (MM), 85dB (line). Dimensions: 430 x 90 x 330mm.

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Hi thanks for viewing my items for sale. This unit has been tested is in great working condition. Shows very light wear and tear. I have two of these subwoofer plate amplifiers available. Any questions feel free to contact me.

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Condition summary: one tested and working, other untested due to broken terminals, boxes not salvageable, crossovers/wiring included. Use case: restoration projects, parts harvesting, experimentation. Condition Disclosure: These amplifiers were pulled from AR P428PS speakers. One tested and working; others untested due to broken terminals. Boxes not salvageable, but crossovers and wiring included. Crossovers and wiring bagged separately, double-boxed for safe transit.

]]> https://acousticresearchspeakers.net/2025/11/ar-p428ps-amplifier-lot-tested-unit-crossovers-wiring-projectparts/feed/ 0 https://acousticresearchspeakers.net/2025/08/vintage-rare-unique-tesla-turntable-nc-470-bookshelf-speakers-rs-334-amplifier-tw-44-junior-for-sale/ https://acousticresearchspeakers.net/2025/08/vintage-rare-unique-tesla-turntable-nc-470-bookshelf-speakers-rs-334-amplifier-tw-44-junior-for-sale/#comments Sat, 30 Aug 2025 07:27:52 +0000 https://acousticresearchspeakers.net/2025/08/vintage-rare-unique-tesla-turntable-nc-470-bookshelf-speakers-rs-334-amplifier-tw-44-junior-for-sale/ ]]> https://acousticresearchspeakers.net/2025/08/vintage-rare-unique-tesla-turntable-nc-470-bookshelf-speakers-rs-334-amplifier-tw-44-junior-for-sale/feed/ 0 https://acousticresearchspeakers.net/2025/08/acoustic-research-ar-p428ps-powered-subwoofer-speaker-amplifier-amp-only-2/ https://acousticresearchspeakers.net/2025/08/acoustic-research-ar-p428ps-powered-subwoofer-speaker-amplifier-amp-only-2/#comments Thu, 28 Aug 2025 07:22:50 +0000 https://acousticresearchspeakers.net/2025/08/acoustic-research-ar-p428ps-powered-subwoofer-speaker-amplifier-amp-only-2/ read more »]]>








For sale is an excellent working Acoustic Research P428PS amplifier in great condition however it has a broken “speaker level in” terminal but a replacement is included as seen in pics, also includes crossover in excellent condition, please see pics. You will receive everything you see in the pictures, if it is not pictured then it’s not included. All items have a hidden invisible security mark. Please view pictures and ask any questions you might have. Have a nice day!

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For sale is an excellent working Acoustic Research P428PS amplifier in excellent condition, also includes crossover in excellent condition, please see pics. You will receive everything you see in the pictures, if it is not pictured then it’s not included. All items have a hidden invisible security mark. Please view pictures and ask any questions you might have. Have a nice day!

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AR Acoustic Research A04 Integrated Amp. AR Acoustic Research A04 Integrated Stereo Amplifier. All inputs/outputs work as expected other than CD/AUX input as noted in’Condition. Bare wire and banana jack outputs. Fair – NOTE: CD/AUX input is faulty, no sound plays from one channel and plays very quietly, all other inputs work as expected and sound great playing out of this AMP with audio controls working as expected – All buttons and knobs work, some dust in grooves but in generally good condition – See photos. 430 x 88 x 356mm. Thank you for your interest in in this item. Please be aware: All Items pictured are included. If items are not pictured which you feel should be, please assume they are not included. As our items are donated we are unsure if any accessories are missing from when the item was new. Some items may be sent with Evri. This means we are not responsible for the prices quoted. How long do I have to pay for my order? We will review any offers made. As stated above, all of our listed items are stored once listed. Consequently, we are unable to offer viewings of our active items. If an item is damaged in transit and is not safe to return, we can accept a photo of the damaged item. We aim to ensure all our buyers are happy and will do our best to put right any given situation which is within our control. We are open Monday to Friday 9.30am – 4.30pm. This is a charity listing for. St Peter & St James Hospice. All profits raised will go directly to support our hospice in East Sussex and your support is much appreciated.

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