{"product_id":"chord-electronics-bertti","title":"Chord Electronics BerTTi","description":"\u003cp\u003eThe Chord Electronics BerTTi puts Ultima amplifier topology into a box that stacks on top of your \u003ca href=\"\/products\/chord-electronics-hugo-tt2\"\u003eHugo TT2\u003c\/a\u003e. Seventy-five watts per channel of fully balanced Class AB MOSFET power, dual feed-forward error correction monitoring every output device in real time, and twin high-frequency switch-mode power supplies that keep the whole thing cool enough to sit in a desktop system without a second thought. This is not a lifestyle product pretending to be a power amp. It is a proper Chord amplifier that happens to fit on half a rack shelf.\u003c\/p\u003e\n\n\u003ch5\u003eKey Features of the Chord Electronics BerTTi\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e75W per channel into 8 ohms, 110W into 4 ohms\u003c\/strong\u003e from a fully balanced Class AB MOSFET output stage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltima amplifier topology\u003c\/strong\u003e with dual feed-forward error correction monitoring every power device in real time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom-made MOSFET power devices\u003c\/strong\u003e with advanced auxiliary power rails for greater voltage swing on transient peaks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwin high-frequency switch-mode power supplies\u003c\/strong\u003e with 400kHz super low noise auxiliary power supply for additional headroom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced XLR and unbalanced RCA inputs\u003c\/strong\u003e for connection to any preamplifier or DAC with variable output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-current speaker binding posts\u003c\/strong\u003e with 12V trigger input for system integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour internal fans\u003c\/strong\u003e for active cooling in confined desktop and rack environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStackable with Hugo TT2 and \u003ca href=\"\/products\/chord-electronics-hugo-m-scaler\"\u003eHugo M Scaler\u003c\/a\u003e\u003c\/strong\u003e in a matched Table Top system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable in Black and Silver\u003c\/strong\u003e with precision-machined aircraft-grade aluminum chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eUltima Topology in the BerTTi\u003c\/h5\u003e\n\u003cp\u003eThe BerTTi is the smallest and most affordable amplifier to receive Chord's Ultima topology, the same error-correction architecture used in the company's flagship mono blocks. Dual feed-forward error correction continuously monitors the electrical and thermal performance of every MOSFET power device in the output stage, correcting nonlinearities before they reach the speaker terminals. Each amplifier channel has two independent error correction pathways, each one compensating for distortion products at the power devices in real time.\u003c\/p\u003e\n\n\u003cp\u003eThis topology was originally theorized by Professor Malcolm J. Hawksford and developed in compact form by Robert Cordell. Chord founder John Franks adapted it for the company's proprietary MOSFET designs, and the BerTTi is the latest implementation. The result is measurably low distortion without the feedback-related compromises that plague conventional correction schemes.\u003c\/p\u003e\n\n\u003ch5\u003eChord Electronics BerTTi Power Supply Design\u003c\/h5\u003e\n\u003cp\u003eTwin switched-mode power supplies feed the output stage, and a separate 400kHz super low noise auxiliary supply boosts the front-end voltage rails above the main rails. This gives the BerTTi more headroom for dynamic transients than its 75-watt rating might suggest. The higher auxiliary rail voltage means the input stage can swing further before clipping, preserving signal integrity on peaks that would compress a simpler design. Four internal fans keep operating temperatures low enough for placement in enclosed cabinets or tight desktop stacks.\u003c\/p\u003e\n\n\u003ch5\u003eInputs and System Integration\u003c\/h5\u003e\n\u003cp\u003eThe rear panel carries balanced XLR and unbalanced RCA inputs, two pairs of high-current speaker binding posts, a 12V trigger input, and an IEC mains connector with master power switch. The single front-panel polycarbonate sphere serves as the power switch, glowing to indicate operating state. The BerTTi is designed primarily as the power section for the Hugo TT2, which functions as DAC, preamplifier, and headphone amp in one chassis. Feed it balanced XLR from the TT2's outputs and the system is complete.\u003c\/p\u003e\n\n\u003cp style=\"text-align: center; margin: 20px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/bertti_rear_inline.jpg?v=1773417144?v=1773168546\" alt=\"Chord Electronics BerTTi rear panel showing balanced XLR and RCA inputs, speaker binding posts, and 12V trigger\" style=\"display: block; margin-left: auto; margin-right: auto; max-width: 100%;\" loading=\"lazy\"\u003e\n\u003c\/p\u003e\n\n\u003ch5\u003eBuilding the Complete Table Top System\u003c\/h5\u003e\n\u003cp\u003eThe BerTTi matches the Table Top dimensions at 235mm wide, stacking with the Hugo TT2 and Hugo M Scaler. A three-box stack gives you over a million taps of digital processing (via M Scaler), the TT2's 98,304-tap DAC with balanced outputs, and 75 watts of Ultima-topology amplification. That is a complete source-to-speaker system in three matched boxes that occupies less space than a single full-width amplifier. The 12V trigger lets the BerTTi power on and off automatically with the TT2.\u003c\/p\u003e\n\n\u003cp style=\"text-align: center; margin: 20px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/bertti_stack_inline.jpg?v=1773417145?v=1773168599\" alt=\"Chord Electronics BerTTi stacked with Hugo TT2 and Hugo M Scaler in a complete Table Top system\" style=\"display: block; margin-left: auto; margin-right: auto; max-width: 100%;\" loading=\"lazy\"\u003e\n\u003c\/p\u003e\n\n\u003ch5\u003eWhat Replaced the TToby\u003c\/h5\u003e\n\u003cp\u003eThe BerTTi replaces Chord's earlier TToby stereo power amplifier in the Table Top range. The primary upgrade is the addition of Ultima topology: the TToby used a single feed-forward error correction pathway, while the BerTTi uses dual pathways per channel. The new 400kHz auxiliary power supply is also new to this model, providing additional voltage swing that the TToby lacked. The chassis dimensions and stacking compatibility remain unchanged.\u003c\/p\u003e\n\n\u003ch5\u003eWhere the BerTTi Fits in the Chord Amplifier Lineup\u003c\/h5\u003e\n\u003cp\u003eThe BerTTi is Chord's entry point into Ultima-topology amplification. Above it, the \u003ca href=\"\/products\/chord-electronics-etude\"\u003eEtude\u003c\/a\u003e delivers 150W per channel in the Choral range, the \u003ca href=\"\/products\/chord-electronics-ultima-6\"\u003eUltima 6\u003c\/a\u003e provides 180W, and the lineup scales up through the \u003ca href=\"\/products\/chord-electronics-ultima-5\"\u003eUltima 5\u003c\/a\u003e, \u003ca href=\"\/products\/chord-electronics-ultima-3\"\u003eUltima 3\u003c\/a\u003e, and \u003ca href=\"\/products\/chord-electronics-ultima-2\"\u003eUltima 2\u003c\/a\u003e mono blocks. All share the same dual feed-forward error correction architecture. The BerTTi is the only Ultima amplifier in the Table Top form factor, making it the natural partner for the Hugo TT2 and M Scaler.\u003c\/p\u003e\n\n\u003ch5\u003eThe Listening Room Difference\u003c\/h5\u003e\n\u003cp\u003eWe're a third-generation family business with a brick-and-mortar showroom in Chestertown, Maryland, and a reputation built on exceptional service and relentless passion for hifi. At this level, every detail matters, and we're here to make sure you get it right. Whether you need help with system matching, setup guidance, or just want to talk through your options before pulling the trigger, owner Mike Hoaston is a phone call away. We don't just ship boxes. We help build systems, and our support lasts well beyond the sale. Call or text 410-239-2020.\u003c\/p\u003e\n\n\u003ch5\u003eChord Electronics BerTTi Specifications\u003c\/h5\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background-color:#f3f3f3;\"\u003e\n\u003cth style=\"text-align:left;padding:12px;border:1px solid #ddd;width:34%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:12px;border:1px solid #ddd;width:66%;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eAmplifier Type\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eFully balanced Class AB MOSFET with Ultima dual feed-forward error correction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003ePower Output\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e75W per channel into 8 ohms, 110W per channel into 4 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eInputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e1x Balanced XLR, 1x Unbalanced RCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eSpeaker Outputs\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e2 pairs high-current binding posts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eTrigger\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e12V trigger input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eTwin switch-mode power supplies with 400kHz auxiliary supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eCooling\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eFour internal fans (active cooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e235mm (W) x 59mm (H) x 256mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e3.7 kg (8.2 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eFinishes\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eBlack, Silver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #ddd;\"\u003e3 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Chord Electronics","offers":[{"title":"Black","offer_id":42641547624544,"sku":"CHORDBERTTBL","price":5515.0,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":42641566367840,"sku":"CHORDBERTTSL","price":5515.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5073\/8528\/files\/01_bertti_black_front.jpg?v=1773168350","url":"https:\/\/listenroom.com\/products\/chord-electronics-bertti","provider":"The Listening Room","version":"1.0","type":"link"}