{"version":"1.0","provider_name":"The Audio People","provider_url":"https:\/\/theaudiopeople.com.vn\/vi","author_name":"admin","author_url":"https:\/\/theaudiopeople.com.vn\/vi\/author\/admin\/","title":"ZMF Headphones Caldera - The Audio People","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"gcfvlZblIj\"><a href=\"https:\/\/theaudiopeople.com.vn\/vi\/product\/zmf-headphones-caldera\/\">ZMF Headphones Caldera<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/theaudiopeople.com.vn\/vi\/product\/zmf-headphones-caldera\/embed\/#?secret=gcfvlZblIj\" width=\"600\" height=\"338\" title=\"&#8220;ZMF Headphones Caldera&#8221; &#8212; The Audio People\" data-secret=\"gcfvlZblIj\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/theaudiopeople.com.vn\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/theaudiopeople.com.vn\/wp-content\/uploads\/2025\/10\/ZMFCaldera_01_Shopify.jpg","thumbnail_width":1500,"thumbnail_height":1500,"description":"Acoustics are the name of the game building planar-magnetic headphones, and\u00a0ZMF Headphones have made acoustics their playground. That spells good news for Caldera Open as Zach Mehrbach\u2019s first, original, planar-magnetic headphone release, an implement of everything he\u2019s learnt acoustically. Such is the groundwork that can be had from cutting one\u2019s teeth building brilliant dynamic driver headphones. The biggest compliment to give ZMF\u2019s asymmetrical double-sided planar-magnetic Caldera Open is that it sounds six years in the making \u2013 exactly the whole R&amp;D process.\u00a0 The influence of Caldera Open\u2019s patented acoustic system, dubbed Caldera Asymmetrical Magnet Structure (CAMS), is so great that this flagship is named after the basin-like depression resulting from the explosive collapse of a volcano \u2013 also the shape of its airflow management system. The success of such implements has now spawned Caldera Closed too. So here\u2019s a release that\u2019s landing ZMF on the planar-magnetic map with a bang, tuned partly in reference to the Harman Curve and sure to impress with the authoritative wall of sound such drivers are known for \u2026 yet maintaining the effortlessness, micro-dynamics and resolution their dynamic driver releases symbolise.\u00a0[See Product Desc. For More] It leapt onto\u00a0Headfonia&#8216;s Recommended Buys list.\u00a0Headfonics &#8220;was simply not expecting this huge emotionally enjoyable sound complete with that trademark easy-to-listen-to tuning&#8221; from an &#8220;incredible high-end debut planar&#8221;. Headphonesty calls Caldera &#8220;art for music&#8217;s sake&#8221;. Audio Discourse says this release is a totally clean slate for ZMF. Caldera Open&#8217;s biggest strength at the drawing board was that it was designed from scratch. With a new asymmetrical magnet array working for \u2013 not against or apart from \u2013 earcup acoustics, ZMF&#8217;s original work merged their two biggest technical accomplishments from 2022 into one headphone. Certainly, CADS birthed Caldera Open together with the Atrium Damping System (ADS). CADS starts with trapezoidal N52 magnets that shape and optimise airflow either side of Caldera&#8217;s 80mm planar driver minimising turbulence and phase issues.\u00a0 It&#8217;s a volcano-like magnet structure\u00a0that allows air to naturally spread out, and maintains a slightly asymmetric force making the membrane more nodal, pushing a massive amount of air towards the ear\u00a0while diffusing it at the same time. Macro dynamics are a given but it&#8217;s micro-dynamic reproduction that distinguishes Caldera Open. The traces in proprietary ZMF planar driver film are gold-plated copper, and the diaphragm is coated with silver to maximise excursion along the traces. It&#8217;s not just sheer driver size producing authority and slam \u2013 actual pistonic excursion akin to dynamic drivers reproduces tiny gradations in SPL. This sees Caldera Open&#8217;s timbral resolution on par with the likes of its Atrium and V\u00e9rit\u00e9 counterparts.\u00a0 Indeed, Caldera Open won\u00a0Part-Time Audiophile&#8216;s Reviewers Choice award, winning similar accolades too on TechPowerUp. Armed with the technological potential of CADS, 2022&#8217;s release of ADS was the key taking Caldera&#8217;s design to 11.\u00a0 Atrium Damping minimised back-wave cancellation\u00a0from the rear of the driver, for more pressure to be exerted in a controlled manner towards the ear, carefully away from the back volume at\u00a0determined frequencies. The smallest details made all the difference to a driver with as much resolution as Caldera Open produced, and ZMF extended their research to earpads with three depth variances released for a complete ecosystem of accessories. All Caldera pads bear fluting \u2013 the tapering of rim thickness and circumference\u00a0back to\u00a0front \u2013\u00a0officially sealing the integral\u00a0role\u00a0oft underestimated items\u00a0play on the ZMF tuning process. Already, Caldera Open&#8217;s combination of Atrium Damping plus the horn-like acoustic amplifier its sculpted earpads take the form of ensure substantially better SPL loading of the driver ear-side. With sensitivity at a high 95dB ensured by these added implements, the driver and motor are then freed to focus on mustering as much deep bass extension as possible from the air volume within limited cup enclosures. Caldera is a call to experiment with sources, so big-small devices such as Cayin Audio&#8216;s\u00a0C9ii,\u00a0HiBy Music&#8216;s FD5, R8II plus RS8 and iBasso Audio&#8216;s PB5 throw their hat into the ring to work very satisfactorily. Yet for the very best performance, make use of ZMF&#8217;s purely resistive, 60ohm flat impedance and electrical phase\u00a0for a happy match with transformer output tube amplifiers from Cayin and Feliks Audio, or Enleum&#8216;s\u00a0HPA-23RM. Perfect voltage sources can&#8217;t hurt either and the solid-state route is straightforward with Questyle Audio&#8216;s current-mode desktop flagship\u00a0CMA18. The Cayin iHA-8 and\u00a0HIFIMAN EF500 are\u00a0absolutely capable. And the\u00a0dCS Data Conversion Systems\u00a0Lina, with unlimited damping factor and resolution, finally milks every drop of performance left untapped in Caldera Open. That&#8217;s exactly the kind of attention Caldera Open deserves, the planar-magnetic cherry on the ZMF cake that completes the circle from the very first days Zach Mehrbach spent modding venerable Fostex T50RPs. Caldera is a headphone unlike any other, entering a world of planar magnetics yet not being entirely of it. Explore Caldera Closed for listening in public settings here, the rest of ZMF&#8217;s dynamic driver releases as the perfect complement to Caldera here, or check out our other headphones here."}