{"title":"Can Jam!","description":"\u003cp\u003ePersonal Audio is a sub-genre, within a niche, wrapped in a mystery.  Just the lingo itself is vast, evolutionary, and sprinkled with a combination of Boomer and Gen-Z terminology: Intra-Aural, IEMs, OEMs, OnEMs, Bone Conduction, Open- or Closed-Back. We don't know if we are talking about the latest SxSW setlist or some truly audiophile jargon. \u003c\/p\u003e\n\u003cp\u003eWe aren't totally new to Personal Audio, or as us \"Uncs\" call it: Can Jam -- But we are ready to broaden our listening styles and experiences to entertain what these compact components have to offer. \u003c\/p\u003e","products":[{"product_id":"the-headroom-max-exceptional-headphone-amplifier","title":"The HeadRoom MAX - Exceptional Headphone Amplifier","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eFortunately there are folks out there like Tyll Hertsens of \u003cstrong\u003eHeadRoom\u003c\/strong\u003e, who has made it a personal mission to bring high-end headphone listening to the masses. His\u003cstrong\u003e HeadRoom Max\u003c\/strong\u003e was his contender for the state-of-the-art headphone amplifier crown—and at less than $1500 to boot. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003e\n\u003cspan data-processed=\"true\" data-subtree=\"aimfl,mfl\"\u003eThe \u003cstrong\u003eHeadRoom Max \u003c\/strong\u003eis a, largely vintage, high end headphone amplifier hand built in Boseman Montana, during the late 90's-00's\u003c\/span\u003e known for using premium components like Burr-Brown 627 op-amps and dual-mono power supplies. It was marketed as a flagship, \"hot-rod\" home amplifier designed for excellent resolution, deep bass, and high power, often featuring balanced connectivity and Neutrik jacks\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eOne common thread in the growing line of HeadRoom amplifier\/processors is their proprietary (although licensable) module, which attempts to ameliorate the hard-left\/center\/hard-right imaging that makes headphone listening an ordeal for so many people. \u003c\/span\u003e\u003cspan\u003eHeadRoom's crossfeed circuit bleeds a measured amount of opposite-channel information into each stereo channel, in order to cure the hard-left\/hard-right image location common to 'phones listening. Also, by adding time delay, it compensates for Inter-Aural Time Difference (ITD), which is one of the ways the brain establishes the location of sounds. The net result of this blending of sounds and timing is an image that does not inhabit the head, but rather seems to be located more in front of you, spread laterally across a soundstage. The processed sound is \u003ci\u003enot\u003c\/i\u003e the same as listening through speakers, but it sounds less artificial than the unprocessed signal—and is far less fatiguing to listen to.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv data-processed=\"true\" data-hveid=\"CAIQAA\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Y3BBE\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003eKey Features and Aspects of the Headroom MAX:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv data-processed=\"true\" data-hveid=\"CAIQAA\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Y3BBE\"\u003e\n\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv data-processed=\"true\" data-hveid=\"CAIQAA\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Y3BBE\"\u003e\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003eDesign \u0026amp; Build:\u003c\/strong\u003e Often described as heavy and robust, with solid machined aluminum casing. It featured dual-mono premium HeadRoom audio modules.\u003c\/span\u003e\u003c\/div\u003e\n\u003cul data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"KsbFXc U6u95\"\u003e\n\u003cli data-processed=\"true\" data-hveid=\"CAMQAQ\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Z1qcYe\"\u003e\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003eComponents:\u003c\/strong\u003e Utilized high-quality parts, including Nobel potentiometers, Avel-Lindberg toroidal transformers, and polyphenoline sulfide film capacitors.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-processed=\"true\" data-hveid=\"CAMQAg\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Z1qcYe\"\u003e\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003ePerformance:\u003c\/strong\u003e Known for producing a full-bodied, detailed, and dynamic sound, often cited as an \"all-out assault\" on high-end headphone amplification at the time.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-processed=\"true\" data-hveid=\"CAMQAw\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Z1qcYe\"\u003e\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003eFunctionality:\u003c\/strong\u003e Served as both a dedicated headphone amplifier and an active pre-amp.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-processed=\"true\" data-hveid=\"CAMQBA\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"Z1qcYe\"\u003e\u003cspan data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong data-processed=\"true\" data-sfc-cb=\"\" data-sfc-root=\"c\" class=\"Yjhzub\"\u003eMarket Position:\u003c\/strong\u003e Originally priced around $1300–$1600, it was marketed factory-direct to audiophiles\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eSo, those who know us understand that we're not inherently \"can guys\" but, we believe HeadRoom's Max is an extraordinary product, The headphone listener today does not lack for choices when it comes to headphones, that's for certain, and each manufacturer offers high-performance units that incorporate topnotch headphone amps, and at a wide range of prices. Yet, for the sheer love of music, I'd have to say that HeadRoom Max is the hard to beat even being what's considered a \"classic\" piece of electronics. This piece in in exceptionally clean condition and been thoroughly checked and inspected by our in-\u003c\/span\u003ehouse headphone tech and he says this guy is a 100% winner.\u003c\/p\u003e\n\u003cp\u003eDemos are always encouraged here in Andover.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eThe HeadRoom MAX Headphone Amplifier: $779.00\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43168194527299,"sku":null,"price":779.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/PhotoApr212026_103210AM.jpg?v=1776783654"},{"product_id":"shanling-scd1-3-sacd-player-amazing-swiss-army-knife-player","title":"Shanling SCD1.3 SACD Player - Amazing Swiss Army Knife Player","description":"\u003cp\u003eThe \u003cstrong\u003eShanling SCD1.3\u003c\/strong\u003e shines as a High-End DAC playing SACDs, but it was designed as a multifunctional source component for a wide range of Hi-Fi setups. Apart from SACDs, you can enjoy playback from local USB drives, convenient Bluetooth streaming or even DLNA, Airplay and NAS support. And while its single-ended and balanced outputs will be matching partners for many audiophile amplifiers or active speakers, the included digital inputs can feed even better DACs, taking advantage of the new advanced I2S support.\u003c\/p\u003e\n\u003cp\u003eStarting at the titular SACD playback, SCD1.3 utilizes the MediaTek ME1389EE system alongside the Sanyo HD870 laser in tray style mechanism, fully unlocking the capabilities of the High-Resolution SACD discs and serving as well for standard CDs. And for Hybrid SACDs, there is a dedicated button for easy switching between SACD and CD layers.\u003c\/p\u003e\n\u003cp\u003eSound tuning of the SCD1.3 was based on the\u003cspan\u003e \u003c\/span\u003eShanling M9 Plus, with the flagship AKM AK4499EX + AK4191 DAC system at its center. Highly detailed, with a vast and precise soundstage, yet adding a bit of warmth and smoothness, for the classic Shanling sound. With highly precise volume control and MUSES8920 acting as the pre-amplifier, SCD1.3 can be paired directly with power amplifiers or active speakers, for a simple and high-quality 2-channel speaker setup.\u003c\/p\u003e\n\u003cp\u003eWhen it comes to digital outputs, SCD1.3 is the first Shanling model to adapt a new advanced I2S system, featuring a dedicated FPGA circuit for further adjustability of I2S output. This special feature offers significantly improved compatibility with DACs across the market, at the launch already including 10 of the most common I2s HDMI pinouts. And for simpler DACs, there is the classic combination of coaxial and optical SPDIF. Note: SACD disc playback will be converted to PCM 88.2 kHZ for digital outputs.\u003c\/p\u003e\n\u003cp\u003eFor its multifunctional roles, SCD1.3 runs the latest generation of Shanling’s MTouch system, powered by the Ingenic X2000 platform and controlled through a 5-inch touch screen. The new generation of MTouch offers improved speed, more accurate response to touch controls and simplified UI, further adjusted for the role of the CD player. MTouch also unlocks the wireless capabilities of SCD1.3, a Bluetooth 5.0 receiver function with the support of LDAC, aptX HD and AAC, alongside Wi-Fi connectivity, bringing in DLNA, Airplay and NAS functions.\u003c\/p\u003e\n\u003cp\u003eAnd for situations when the resolution of SACD is still not enough, the Hi-Res capabilities of SCD1.3 go all the way up to 32-bit \/ 768 kHz and DSD512. Either connect SCD1.3 to a computer, utilizing its high-performance XMOS XU316 USB input, or just plug a USB drive directly into the USB port on the front panel, for pure lossless local playback directly on the SCD1.3.\u003c\/p\u003e\n\u003cp\u003eSo here's a SAD\/CD\/BlueTooth HiRes Streamer Swiss Army Knife of a player... the hype is real and this player performs WELL above its price point. In as-new condition like it's just out of its wrapper... has all the as-new accompaniments. Indistinguishable from brand new! - SAVE hundreds!\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eShanling SCD 1.3 Player: $1,299.00 plus sales tax and shipping when applicable\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43208563982403,"sku":null,"price":1299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/PhotoMay022026_44042PM.jpg?v=1777813443"},{"product_id":"marantz-hd-dac-1-all-the-bits","title":"Marantz HD DAC-1 All The Bits!","description":"\u003cdiv class=\"itemIntroText\"\u003e\n\u003cstrong\u003eMarantz \u003c\/strong\u003eis a company which managed to successfully penetrate the area of home cinema, receivers and modern streamers while preserving audiophile roots and an aura of exclusivity at the same time. It seems that they've found a recipe how to balance between the world of modern technologies and this what is proved, classic and desired by the lovers of high-quality sound. If you are interested in the gear from previous ages, and if you like internet profiles with vintage audio, you have surely seen loads of Marantz's equipment there - beautiful amplifiers, tuners with backlit scales and oscilloscopes, CD players with massive trays and advanced optics, all in metal, wood and glass. No wonder that in times of omnipresent plastic a retro fashion came back, bringing stereo equipment to where it should be.\u003c\/div\u003e\n\u003cdiv class=\"itemIntroText\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003eMany customers have come to realise that listening to music requires just two loudspeakers, not a dozen and three subwoofers. But what happens when we throw the latest chipsets into such a stylish box? Let's say separate DAC with a few digital inputs and a headphone amplifier. Well, we get something like HD-DAC1 - one of the most expected devices that have seen the light of day. \u003cmeta charset=\"UTF-8\"\u003e\n\u003cspan\u003eLooking at Marantz one can have an impression that Japanese engineers designed a beautiful casing and then implanted a couple of elements from other devices. After a few days of listening here at the shop, we got an impression that the HD-DAC1 was meant to be something more from the beginning – an awesome headphone amplifier equipped with a hi-end converter and pre-amp, opening the way to build a fully fledged system. Typical Marantz quality and visually a stunning piece. This one comes to HHA from a long time customer who takes incredible care of their gear. Exemplary condition, complete with all the fixes including Remote and PC.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eDigital inputs: 2 x optical, coaxial, USB B, USB A\u003cbr\u003eAnalogue inputs: 3,5 mm\u003cbr\u003eAnalogue outputs: RCA (fixed), RCA (variable)\u003cbr\u003eHeadphone out: 6,3 mm\u003cbr\u003eFrequency response: 2 Hz - 20 kH\u003cbr\u003eS\/N ratio: 106 dB\u003cbr\u003eTHD: \u0026lt;0.0012%\u003cbr\u003eDimensions (H\/W\/D): 9\/25\/29 cm\u003cbr\u003eWeight: 5 kg\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003e\u003cspan\u003eCome have a listen here in Andover\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"itemFullText\"\u003e\u003cstrong\u003eMarantz HD DAC-1: $599.00 + sales tax and shipping when applicable\u003c\/strong\u003e\u003c\/div\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43216135848003,"sku":null,"price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/PhotoMay052026_100651AM.jpg?v=1777993546"},{"product_id":"grado-hp-1-headphone-amp-high-performance-can-jammer","title":"Grado HP-1 Headphone Amp - High Performance Can-Jammer!","description":"\u003cp\u003eWith revisions in place by Grado, we were interested in hearing the RA-1, with a large outboard transformer and new sexier knob and pot... with lovely wood frame. This model may also run on batteries or be attached to the beefy five pin plug umbilical on the rear side.\u003c\/p\u003e\n\u003cp\u003eAll cans, Grado made or otherwise, play more authoritative and dynamic with the AC version of the Grado. All cans! For the first time, non-Grado headphones were also maximized in the Grado AC edition. Fabulous! Plus, the musical\/definition differences between the 13 times more expensive HP-4 and the Grado AC was never more than about 20% max. Also, the AC was much more dynamic and open sounding than the older battery-only RA-1.\u003c\/p\u003e\n\u003cp\u003eThe Grado RA-1 AC is a killer compact design and has layers of musical elegance with all cans I used. Nothing bright, edgy, or lumpy about this design. You will look for the tubes, but find none. You get a huge helping of the sophistication and elegance of the all-tube E.A.R. HP-4 with the Grado AC, and that in just a 12 ounce, five-inch-long package!\u003c\/p\u003e\n\u003cp\u003eMade of mahogany and fitted with beefy connectors, the latest RA-1 AC from Grado is a giant killer. It works well with any cans, and maximizes Grado cans in particular to a tee. With batteries it is a very good unit, but plugged into the large transformer with an audiophile AC cable, get ready for extreme performance, and the best I have heard under $1000-$1500, ever.\u003c\/p\u003e\n\u003cp\u003eMost highly recommended for the headphone enthusiast looking for maximum bang for the buck, and an elegant solution to powering their favorite cans. In excellent overall condition - another instant classic. BOOM!\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eGrado RA-1\/AC: $299.00 plus shipping and sales tax when applicable\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43231956205635,"sku":null,"price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/PhotoMay082026_104739AM.jpg?v=1778252975"},{"product_id":"audio-technica-ath-r70x-open-back-reference-headphones","title":"Audio Technica ATH-R70x, Open-Back Reference Headphones","description":"\u003cp\u003eIf you are looking for a smooth, transparent, and hi-fi-grade listening experience for your ears and no one else's, look no further than these ATH-R70x headphones. Known for exceptional comfort and a neutral presentation, these \"cans\" are ones that can be worn day-in and day-out, all day.   The velvet ear cushions and adjustable headphone provide just the right fit without too much pressure. \u003c\/p\u003e\n\u003cp\u003eSoundwise, the ATH-R70x have a flat and uncolored frequency response.  These are not \"Beats Pros.\"  These are headphones that could be used for private listening sessions or home-studio reference playback in equal measure.   Bass response is known to be extended and pleasant without unnatural punchiness of some pop-music headphones.  Midrange clarity and accuracy is welcomed along with smooth and detailed treble that is non-fatiguing.  The open-back nature of these headphones also contributes to a broad soundstage.\u003c\/p\u003e\n\u003cp\u003eAt 470-ohm impedance, it is recommended to use the ATH-R70x with a dedicated headphone preamp.  We have those too!  Please enquire. \u003c\/p\u003e\n\u003cp\u003eThis set ships with the original box and packaging. \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e$279 (plus applicable shipping and\/or MA sales tax)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43300606771267,"sku":null,"price":279.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/ATH-R70x01.jpg?v=1779735885"},{"product_id":"beyerdynamic-t-1-headphones-a-20-preamp-combo","title":"Beyerdynamic T-1 Headphones \u0026 A-20 Amp Combo","description":"\u003cp\u003e\u003cstrong\u003eBeyerdynamic\u003c\/strong\u003e may not be a household name in the US, but in Germany, this company is one of the country's most prominent brands in telecommunications and audio. What started in 1924 in the nascent world of big screen cinema, Beyerdynamic grew rapidly to include other broadcast systems, phone systems, and eventually home audio equipment design and development.  \u003c\/p\u003e\n\u003cp\u003eIn 1985, the DT880 headset was developed and lauded by the industry for its ability to produce the sound qualities and clarity of electrostatic headsets, but with the dynamic drivers.  This design ethos has been with the company ever since and is the foundation of the T-1 set we have here on display. \u003c\/p\u003e\n\u003cp\u003eThe\u003cstrong\u003e Tesla T-1\u003c\/strong\u003e debuted in 2009 and featured a newly designed driver compliment which enveloped the listener in clean, dynamic sound with nearly zero audible distortion. The sense of space that the T-1 created amazes listeners even today. And even with this level soundstage and warmth, the headphones still delivered details in the music that traditionally electrostatics can only provide. \u003c\/p\u003e\n\u003cp\u003eThis set of T-1 are being paired with Beyer's\u003cstrong\u003e A-20 headphone amplifier\u003c\/strong\u003e.  The A-20 is a perfect match for the T-1.  The amp's near-silent, low-distortion design is specifically tailored to high impedance headsets like the T-1 (@ 600 ohm).  T\u003cspan\u003ewo parallel 1\/4\" headphone jacks grace the simplistic front panel. A set of RCA inputs and hard-wired RCA outputs are placed on the back (great for looping the signal directly to active speakers without needing the amp powered on).  A high-quality ALPS volume pot provides gain control.  The layout is \u003c\/span\u003esimple and effective.\u003c\/p\u003e\n\u003cp\u003eThis combo is in impeccable condition.  The A-20 comes complete with box and packaging.  The T-1 do not have the original box, but do come with a new set of plug-in  braided cables. \u003c\/p\u003e\n\u003cp\u003eDemos are available in Andover, MA\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e$799 for the set (plus applicable shipping and\/or MA sales tax)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e","brand":"Holt Hill Audio","offers":[{"title":"Default Title","offer_id":43301027479619,"sku":null,"price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/files\/BeyerT-1A-2003.jpg?v=1779737184"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2197\/6387\/collections\/DgcEyC2WVvDgjQBgMmqaHL.jpg?v=1779726956","url":"https:\/\/holthill.com\/collections\/can-jam.oembed","provider":"Holt Hill Audio","version":"1.0","type":"link"}