{"product_id":"backert-labs-rhythm-1-4-preamplifier","title":"Backert Labs Rhythm 1.4 Preamplifier","description":"\u003c!-- ======================================================\nBackert Labs Rhythm 1.4 Preamplifier\nSEO-Optimized Shopify Product Page\nBuilt-to-Order Notice Included\n====================================================== --\u003e\n\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  font-size:.8rem;\n  letter-spacing:.08em;\n  text-transform:uppercase;\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}\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}\n\n.bh-main,\n.bh-side{\n  width:100%;\n  min-width:0;\n  max-width:100%;\n}\n\n@media(min-width:900px){\n  .bh-grid{\n    grid-template-columns:minmax(0,64%) minmax(0,36%);\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  word-break:normal;\n  overflow-wrap:normal;\n  hyphens:none;\n}\n\n.bh-section p,\n.bh-section li{\n  word-break:normal;\n  overflow-wrap:break-word;\n}\n\n.bh-bullets{\n  margin:.5rem 0 0;\n  padding-left:1.25rem;\n}\n\n.bh-bullets li{\n  margin-bottom:.45rem;\n}\n\n.bh-specs{\n  display:block;\n  width:100%;\n  min-width:0;\n  max-width:100%;\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\n\u003cdiv class=\"bh-wrap\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\n\u003cspan class=\"bh-eyebrow\"\u003eBackert Labs\u003c\/span\u003e\n\n\u003ch1 class=\"bh-title\" itemprop=\"name\"\u003eBackert Labs Rhythm 1.4 Preamplifier\u003c\/h1\u003e\n\n\u003cp class=\"bh-intro\"\u003eFlagship Class A Tube Line Stage • Patented GreenForce Power Supply • Two NOS 12AU7 Tubes • Balanced and Unbalanced Connectivity • Home Theater Bypass • Made in Pennsylvania\u003c\/p\u003e\n\n\u003cdiv class=\"bh-order-note\"\u003e\n\u003cstrong\u003eBuilt to Order\u003c\/strong\u003e\nThe Backert Labs Rhythm 1.4 Preamplifier is built to order. The typical lead time is approximately 10–14 business days before shipment. Actual production times may vary depending on current demand, finish selection and parts availability.\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-grid\"\u003e\n\n\u003cdiv class=\"bh-main\"\u003e\n\n\u003csection id=\"overview\" class=\"bh-section\"\u003e\n\u003ch2\u003eReference-Level Tube Preamplification with Speed, Scale and Musical Realism\u003c\/h2\u003e\n\n\u003cp itemprop=\"description\"\u003eThe \u003cstrong\u003eBackert Labs Rhythm 1.4 Preamplifier\u003c\/strong\u003e is a flagship tube line stage created for listeners who want the dimensionality and tonal beauty of vacuum tubes without sacrificing speed, transparency or dynamic authority. Its proprietary pure Class A gain circuit uses two selected NOS 12AU7 tubes and operates without global or local negative feedback, allowing music to emerge with natural texture, precise timing and an expansive soundstage.\u003c\/p\u003e\n\n\u003cp\u003eBackert Labs combines its patented GreenForce power supply with premium internal components, an exceptionally low output impedance and a substantial aluminum-and-brass chassis. Five source inputs, four main outputs, a fixed record output and home-theater bypass make the Rhythm 1.4 easy to integrate into sophisticated two-channel and mixed-use systems. Each unit is built to order in Pennsylvania, with a typical production lead time of approximately 10–14 business days before shipment.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"highlights\" class=\"bh-section\"\u003e\n\u003ch2\u003eHighlights \u0026amp; Benefits\u003c\/h2\u003e\n\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePure Class A Tube Circuit\u003c\/strong\u003e — Delivers the dimensional imaging and tonal richness associated with tubes while preserving speed, clarity and dynamic contrast.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003ePatented GreenForce Power Supply\u003c\/strong\u003e — Uses a low-capacitance design with premium film capacitors to respond rapidly to changing musical demands.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eLow Output Impedance\u003c\/strong\u003e — An output impedance below 80 ohms supports a broad range of tube and solid-state power amplifiers.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eFlexible System Integration\u003c\/strong\u003e — Balanced and unbalanced inputs and outputs accommodate high-performance source components and amplifiers.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eBuilt for Long-Term Ownership\u003c\/strong\u003e — A robust aluminum-and-brass chassis, accessible tube compartment and carefully selected components support dependable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"technology\" class=\"bh-section\"\u003e\n\u003ch2\u003eTechnology \u0026amp; Design\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eGreenForce Power-Supply Architecture\u003c\/strong\u003e — Backert Labs’ patented GreenForce design avoids the large banks of electrolytic capacitors commonly used in conventional preamplifiers. Premium film capacitors and low total capacitance allow the power supply to react quickly to musical transients.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDynamic Linearity Gain Circuit\u003c\/strong\u003e — The \u003cstrong\u003eBackert Labs Rhythm 1.4 Preamplifier\u003c\/strong\u003e employs a proprietary Class A circuit that achieves low distortion and extremely low output impedance without global feedback, local feedback or a conventional cathode follower.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTwo-Tube Signal Path\u003c\/strong\u003e — Two selected NOS 12AU7-type vacuum tubes provide the active gain. Their relatively low operating stress promotes long tube life, while the magnetically secured top access panel makes replacement and tube experimentation more convenient.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAluminum-and-Brass Construction\u003c\/strong\u003e — The chassis is machined from solid aluminum, while a heavy brass bottom panel supports the circuit board and adds mechanical stability. A custom toroidal transformer with separate windings for each channel further supports low-noise operation.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" class=\"bh-section bh-faq\"\u003e\n\u003ch2\u003eFAQ — Backert Labs Rhythm 1.4 Preamplifier\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the Rhythm 1.4 built to order?\u003c\/summary\u003e\n\u003cp\u003eYes. The Rhythm 1.4 is built to order. The typical lead time is approximately 10–14 business days before shipment, although production time may vary depending on demand, finish selection and parts availability.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the Rhythm 1.4 include a phono stage?\u003c\/summary\u003e\n\u003cp\u003eNo. The \u003cstrong\u003eBackert Labs Rhythm 1.4 Preamplifier\u003c\/strong\u003e is a line-level preamplifier. A turntable must be connected through a separate moving-magnet or moving-coil phono preamplifier.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan it be integrated into a home theater system?\u003c\/summary\u003e\n\u003cp\u003eYes. The dedicated home-theater bypass allows the front-channel power amplifier to be controlled by an AV receiver or surround processor when watching movies or television.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich replacement tubes are compatible?\u003c\/summary\u003e\n\u003cp\u003eThe Rhythm 1.4 uses two 12AU7 tubes or suitable equivalents, including properly tested ECC82 and 6189 types. Low-noise tubes selected for preamplifier use are recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"why-buy\" class=\"bh-section\"\u003e\n\u003ch2\u003eWhy Buy From Us\u003c\/h2\u003e\n\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, Amplifier Matching and System Setup Support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"related\" class=\"bh-section\"\u003e\n\u003ch2\u003eRelated Products \u0026amp; Accessories\u003c\/h2\u003e\n\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003eBackert Labs Rhumba Extreme 1.4 Preamplifier\u003c\/li\u003e\n\u003cli\u003eBackert Labs Rhumba 1.4 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\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-side\"\u003e\n\n\u003csection id=\"specs\" class=\"bh-section\"\u003e\n\u003ch2\u003eBackert Labs Rhythm 1.4 Preamplifier Specifications\u003c\/h2\u003e\n\n\u003cdiv class=\"bh-specs\" role=\"table\" aria-label=\"Backert Labs Rhythm 1.4 specifications\"\u003e\n\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\"\u003eFlagship vacuum-tube stereo line-stage preamplifier\u003c\/div\u003e\n\u003c\/div\u003e\n\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\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\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 tube gain stage\u003c\/div\u003e\n\u003c\/div\u003e\n\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\"\u003eNo global or local negative feedback\u003c\/div\u003e\n\u003c\/div\u003e\n\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\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eFrequency Response\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e6Hz–108kHz, within 1.5dB\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eTHD + Noise\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e0.09%\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eSignal-to-Noise Ratio\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e98dB; 90dB referenced to a 1V output\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eInput Impedance\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e34,000 ohms\u003c\/div\u003e\n\u003c\/div\u003e\n\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\"\u003eBelow 80 ohms\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eCrosstalk\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e78dB\u003c\/div\u003e\n\u003c\/div\u003e\n\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\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower Supply\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\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\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\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\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\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 × fixed-level stereo RCA output\u003c\/div\u003e\n\u003c\/div\u003e\n\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\u003c\/div\u003e\n\u003c\/div\u003e\n\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\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\u003c\/div\u003e\n\u003c\/div\u003e\n\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\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003ePower Consumption\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e31 watts at idle\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eChassis\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eMachined aluminum with solid-brass circuit-board support panel\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eDimensions\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e17 × 14 × 5 in\u003cbr\u003eW × D × H\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eWeight\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003e29 lbs.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bh-spec-row\" role=\"row\"\u003e\n\u003cdiv class=\"bh-spec-label\" role=\"rowheader\"\u003eAvailable Finishes\u003c\/div\u003e\n\u003cdiv class=\"bh-spec-value\" role=\"cell\"\u003eBlack or silver\u003c\/div\u003e\n\u003c\/div\u003e\n\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\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\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"whats-in-the-box\" class=\"bh-section\"\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e1 × Backert Labs Rhythm 1.4 Preamplifier\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\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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cmeta itemprop=\"brand\" content=\"Backert Labs\"\u003e\n\u003cmeta itemprop=\"category\" content=\"Tube Preamplifiers, Stereo Preamplifiers, Line-Stage Preamplifiers, High-End Audio Components\"\u003e\n\n\u003c\/div\u003e","brand":"Backert Labs","offers":[{"title":"Silver","offer_id":54394588397934,"sku":"BACRHYTHM14SLV","price":12900.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":54394588430702,"sku":"BACRHYTHM14BLK","price":12900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/1537\/4703\/files\/backert-labs-rhythm-1-4-preamplifier.webp?v=1785158870","url":"https:\/\/audiolab.com\/products\/backert-labs-rhythm-1-4-preamplifier","provider":"Audiolab","version":"1.0","type":"link"}