{"product_id":"backert-labs-rhumba-1-4-preamp","title":"Backert Labs Rhumba 1.4 Preamp","description":"\u003c!-- ======================================================\nBackert Labs Rhumba 1.4 Preamp\nSEO-Optimized Shopify Product Page\nOverview Paragraphs: 2\nHighlights \u0026 Benefits: 5\nTechnology \u0026 Design: 4\nFAQ: 4\nRelated Products \u0026 Accessories: 4\nSpecifications: Scroll-Free CSS Grid\nBuilt-to-Order Lead-Time Notice Included\n====================================================== --\u003e\n\u003cstyle\u003e\n.bh-wrap,\n.bh-wrap *,\n.bh-wrap *::before,\n.bh-wrap *::after{\n  box-sizing:border-box;\n}\n\n.bh-wrap{\n  width:100%;\n  max-width:1100px;\n  margin:0 auto;\n  padding:1rem 1.25rem;\n  line-height:1.6;\n}\n\n.bh-eyebrow{\n  display:block;\n  margin:0;\n  letter-spacing:.08em;\n  text-transform:uppercase;\n  font-size:.8rem;\n  opacity:.7;\n}\n\n.bh-title{\n  margin:.25rem 0 1rem;\n  font-size:2.75rem;\n  font-weight:700;\n  line-height:1.2;\n  overflow-wrap:normal;\n  word-break:normal;\n}\n\n.bh-intro{\n  margin:0 0 1.25rem;\n  font-style:italic;\n}\n\n.bh-order-note{\n  width:100%;\n  margin:1rem 0 1.5rem;\n  padding:1rem 1.1rem;\n  border-left:4px solid #1f766f;\n  border-radius:.35rem;\n  background:#f2f8f7;\n  line-height:1.5;\n}\n\n.bh-order-note strong{\n  display:block;\n  margin-bottom:.15rem;\n}\n\n.bh-grid{\n  display:grid;\n  grid-template-columns:minmax(0,1fr);\n  gap:2rem;\n  width:100%;\n  max-width:100%;\n}\n\n.bh-main,\n.bh-side{\n  display:block;\n  width:100%;\n  min-width:0;\n  max-width:100%;\n  margin:0;\n  padding:0;\n  float:none;\n}\n\n@media(min-width:900px){\n  .bh-grid{\n    grid-template-columns:minmax(0,64%) minmax(0,36%);\n    gap:2rem;\n    align-items:start;\n  }\n}\n\n.bh-section{\n  width:100%;\n  max-width:100%;\n  margin:2rem 0;\n}\n\n.bh-section h2{\n  margin:0 0 1rem;\n  line-height:1.3;\n  overflow-wrap:normal;\n  word-break:normal;\n  hyphens:none;\n}\n\n.bh-section p,\n.bh-section li{\n  overflow-wrap:break-word;\n  word-break:normal;\n}\n\n.bh-bullets{\n  margin:.5rem 0 0;\n  padding-left:1.25rem;\n  list-style:disc;\n}\n\n.bh-bullets li{\n  margin-bottom:.45rem;\n}\n\n\/* Scroll-free specifications grid *\/\n.bh-specs{\n  display:block;\n  width:100%;\n  min-width:0;\n  max-width:100%;\n  margin:0;\n  border-top:1px solid #e5e7eb;\n  border-left:1px solid #e5e7eb;\n  overflow:visible;\n}\n\n.bh-spec-row{\n  display:grid;\n  grid-template-columns:minmax(0,42%) minmax(0,58%);\n  width:100%;\n  min-width:0;\n}\n\n.bh-spec-label,\n.bh-spec-value{\n  min-width:0;\n  padding:.58rem;\n  border-right:1px solid #e5e7eb;\n  border-bottom:1px solid #e5e7eb;\n  font-size:.86rem;\n  line-height:1.4;\n  white-space:normal;\n  overflow-wrap:anywhere;\n  word-break:normal;\n  overflow:visible;\n}\n\n.bh-spec-label{\n  background:#f8fafc;\n  font-weight:600;\n}\n\n.bh-faq details{\n  margin:.5rem 0;\n  padding:.75rem 1rem;\n  border:1px solid #e5e7eb;\n  border-radius:.5rem;\n  background:#fafafa;\n}\n\n.bh-faq summary{\n  font-weight:600;\n  cursor:pointer;\n}\n\n@media(max-width:899px){\n  .bh-wrap{\n    padding:.75rem 1rem;\n  }\n\n  .bh-title{\n    font-size:2.1rem;\n  }\n\n  .bh-grid{\n    gap:.5rem;\n  }\n}\n\n@media(max-width:480px){\n  .bh-title{\n    font-size:1.8rem;\n  }\n\n  .bh-spec-row{\n    grid-template-columns:minmax(0,40%) minmax(0,60%);\n  }\n\n  .bh-spec-label,\n  .bh-spec-value{\n    padding:.48rem;\n    font-size:.8rem;\n  }\n}\n\u003c\/style\u003e\n\u003cdiv class=\"bh-wrap\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\u003cspan class=\"bh-eyebrow\"\u003eBackert Labs\u003c\/span\u003e\n\u003ch1 class=\"bh-title\" itemprop=\"name\"\u003eBackert Labs Rhumba 1.4 Preamp\u003c\/h1\u003e\n\u003cp class=\"bh-intro\"\u003eClass A Tube Line-Stage Preamplifier • Two NOS 12AU7 Tubes • Patented GreenForce Power Supply • Balanced XLR Connectivity • Home Theater Bypass • Remote Volume and Mute • Made in Pennsylvania\u003c\/p\u003e\n\u003cdiv class=\"bh-order-note\"\u003e\n\u003cstrong\u003eBuilt to Order\u003c\/strong\u003e This product is built to order. The typical lead time is approximately 10–14 business days before shipment.\u003c\/div\u003e\n\u003cdiv class=\"bh-grid\"\u003e\n\u003c!-- LEFT COLUMN --\u003e\n\u003cdiv class=\"bh-main\"\u003e\n\u003csection class=\"bh-section\" id=\"overview\"\u003e\n\u003ch2\u003eBackert Labs Rhumba 1.4 Preamp for Dynamic, Natural High-End Audio Systems\u003c\/h2\u003e\n\u003cp itemprop=\"description\"\u003eThe \u003cstrong\u003eBackert Labs Rhumba 1.4 Preamp\u003c\/strong\u003e is a tube line-stage designed to reproduce music with speed, dimensionality and natural dynamic expression. Its pure Class A gain circuit uses two carefully selected NOS American-made 12AU7 tubes, delivering the tonal character and spatial presentation associated with tubes while maintaining an exceptionally low output impedance for broad power-amplifier compatibility.\u003c\/p\u003e\n\u003cp\u003eThe Rhumba 1.4 incorporates Backert Labs’ patented GreenForce power supply, refined gain-stage and regulator circuitry, two balanced XLR inputs, two balanced XLR outputs, three RCA inputs and two RCA outputs. It also includes home-theater bypass, an unattenuated record output, balance adjustment, mono operation, mute control and a substantial metal remote for convenient volume and mute operation from the listening position.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section\" id=\"highlights\"\u003e\n\u003ch2\u003eHighlights \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Class A Tube Amplification\u003c\/strong\u003e — Uses a proprietary zero-negative-feedback gain circuit designed to preserve musical timing, tonal texture and dynamic contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatented GreenForce Power Supply\u003c\/strong\u003e — Employs an unconventional low-capacitance architecture intended to respond quickly and accurately to the changing power demands of music.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and Unbalanced Connectivity\u003c\/strong\u003e — Two balanced XLR inputs, two balanced XLR outputs and multiple RCA connections support a wide variety of high-performance audio systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptionally Low Output Impedance\u003c\/strong\u003e — An output impedance below 80 ohms allows the preamplifier to work with a broad range of tube and solid-state power amplifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem-Friendly Control Features\u003c\/strong\u003e — Includes home-theater bypass, record output, balance adjustment, stereo or mono operation, mute and remote-controlled volume.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section\" id=\"technology\"\u003e\n\u003ch2\u003eTechnology \u0026amp; Design\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGreenForce Power-Supply Technology\u003c\/strong\u003e — Backert Labs’ patented power supply uses very little capacitance compared with conventional designs. High-quality polypropylene film capacitors replace electrolytic capacitors within the music-signal power supply, helping the circuit react rapidly to musical transients.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDynamic Linearity Gain Stage\u003c\/strong\u003e — The proprietary gain circuit is engineered to provide accurate dynamics, low distortion and very low output impedance without relying on global or local negative feedback. The design also avoids cathode-follower circuitry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo-Tube Signal Path\u003c\/strong\u003e — The \u003cstrong\u003eBackert Labs Rhumba 1.4 Preamp\u003c\/strong\u003e requires only two 12AU7 or equivalent tubes. Backert Labs supplies selected NOS American-made tubes and provides a magnetically secured top-panel access door for convenient tube replacement or experimentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmerican-Machined Aluminum Chassis\u003c\/strong\u003e — The chassis is machined from solid aluminum in Pennsylvania and designed without visible screws or conventional ventilation openings. A custom toroidal power transformer and Furutech IEC power inlet complete the power architecture.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section bh-faq\" id=\"faq\"\u003e\n\u003ch2\u003eFAQ — Backert Labs Rhumba 1.4 Preamp\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the Backert Labs Rhumba 1.4 built to order?\u003c\/summary\u003e\n\u003cp\u003eYes. This product is built to order, and the typical lead time is approximately 10–14 business days before shipment. Lead times are estimates and may vary based on production demand, finish selection and parts availability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Rhumba 1.4 include a phono input?\u003c\/summary\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eBackert Labs Rhumba 1.4 Preamp\u003c\/strong\u003e is a line-level preamplifier and does not include an internal moving-magnet or moving-coil phono stage. A turntable must be connected through a separate phono preamplifier.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the Rhumba 1.4 be used with a home theater?\u003c\/summary\u003e\n\u003cp\u003eYes. Its dedicated home-theater bypass input passes the signal to the connected power amplifier at a fixed level. The preamplifier does not need to be powered on while the bypass input is being used.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhich replacement tubes are compatible?\u003c\/summary\u003e\n\u003cp\u003eThe preamplifier uses two 12AU7 tubes or compatible equivalents, including select ECC82 and 6189 types. Backert Labs recommends properly tested, low-noise tubes suitable for line-stage operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section\" id=\"why-buy\"\u003e\n\u003ch2\u003eWhy Buy From Us\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003eAuthorized Backert Labs Dealer\u003c\/li\u003e\n\u003cli\u003e5% Reward Points on Every Purchase\u003c\/li\u003e\n\u003cli\u003ePrice Match Guarantee\u003c\/li\u003e\n\u003cli\u003eExpert Tube Selection, Power-Amplifier Matching and System Setup Support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section\" id=\"related\"\u003e\n\u003ch2\u003eRelated Products \u0026amp; Accessories\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003eBackert Labs Rhumba Extreme 1.4 Tube Preamplifier\u003c\/li\u003e\n\u003cli\u003eBackert Labs Rhythm 1.4 Tube Preamplifier\u003c\/li\u003e\n\u003cli\u003eBackert Labs Rhumba Xphono Phono Preamplifier\u003c\/li\u003e\n\u003cli\u003eBackert Labs Selected 12AU7 Replacement Tube Pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c!-- RIGHT COLUMN --\u003e\n\u003cdiv class=\"bh-side\"\u003e\n\u003csection class=\"bh-section\" id=\"specs\"\u003e\n\u003ch2\u003eBackert Labs Rhumba 1.4 Preamp Specifications\u003c\/h2\u003e\n\u003cdiv class=\"bh-specs\" role=\"table\" aria-label=\"Backert Labs Rhumba 1.4 specifications\"\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eProduct Type\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eVacuum-tube stereo line-stage preamplifier\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eAvailability\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eBuilt to order\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTypical Lead Time\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eApproximately 10–14 business days before shipment\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eCircuit Type\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003ePure Class A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eNegative Feedback\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eNone; zero global and local negative feedback\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eGain\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e10dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eOutput Impedance\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eLess than 80 ohms\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTube Complement\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e2 × 12AU7 or compatible equivalents\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eSupplied Tubes\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eSelected NOS American-made 12AU7-type tubes\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTube Access\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eTop-panel magnetic acrylic access door\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower-Supply Design\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003ePatented Backert Labs GreenForce power supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower-Supply Capacitors\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003ePolypropylene film capacitors in the music-signal power supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eOutput Capacitors\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eJantzen Silver polypropylene capacitors\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower Transformer\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eCustom-made toroidal transformer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eBalanced Inputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e2 × stereo XLR input pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eUnbalanced Inputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e3 × stereo RCA input pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTotal Source Inputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e5 stereo input pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eBalanced Outputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e2 × stereo XLR output pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eUnbalanced Outputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e2 × stereo RCA output pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTotal Main Outputs\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e4 stereo output pairs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eRecord Output\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e1 × stereo RCA fixed-level, unattenuated output\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eHome Theater Bypass\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eDedicated bypass input; preamplifier power is not required during bypass operation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eFront-Panel Controls\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eInput selection, volume, balance, power, mute and stereo\/mono\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eRemote Functions\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eVolume up, volume down and mute\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eRemote Construction\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eSolid metal handheld remote control\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePhase\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eNon-inverting \/ correct absolute phase\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePhono Stage\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eNot included; external phono preamplifier required\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eHeadphone Output\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eNot included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower Inlet\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eFurutech IEC inlet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eChassis Material\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003ePanels machined from solid aluminum billet\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eStandard Body Finish\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eBlack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eOptional Body Finishes\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eRed or blue by special order\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eFaceplate Finishes\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eBlack or silver\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eManufacturing\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eDesigned, machined and assembled in Pennsylvania, USA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eQuantity\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eEach\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eBrand\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eBackert Labs\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"bh-section\" id=\"whats-in-the-box\"\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e1 × Backert Labs Rhumba 1.4 Preamp\u003c\/li\u003e\n\u003cli\u003e2 × Selected NOS 12AU7-Type Vacuum Tubes\u003c\/li\u003e\n\u003cli\u003e1 × Solid Metal Remote Control\u003c\/li\u003e\n\u003cli\u003e1 × Detachable AC Power Cable\u003c\/li\u003e\n\u003cli\u003e1 × Owner’s Documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSource components, phono preamplifier, power amplifier, interconnect cables, replacement tubes and upgraded power cord are sold separately.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cmeta itemprop=\"brand\" content=\"Backert Labs\"\u003e \u003cmeta itemprop=\"category\" content=\"Tube Preamplifiers, Stereo Preamplifiers, Line-Stage Preamplifiers, High-End Audio Components\"\u003e\n\u003c\/div\u003e","brand":"Backert Labs","offers":[{"title":"Silver \/ Black","offer_id":54384985899374,"sku":"BACRHUMBA14SLVBLK","price":5000.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Red","offer_id":54384985932142,"sku":"BACRHUMBA14SLVRED","price":5300.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ Blue","offer_id":54384985964910,"sku":"BACRHUMBA14SLVBLU","price":5300.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Black","offer_id":54384985997678,"sku":"BACRHUMBA14BLKBLK","price":5000.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Red","offer_id":54384986030446,"sku":"BACRHUMBA14BLKRED","price":5300.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Blue","offer_id":54384986063214,"sku":"BACRHUMBA14BLKBLU","price":5300.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/1537\/4703\/files\/backert-labs-rhumba-1-4-preamp.webp?v=1784915209","url":"https:\/\/audiolab.com\/products\/backert-labs-rhumba-1-4-preamp","provider":"Audiolab","version":"1.0","type":"link"}