Locomotive 14B PCB Unlock Vintage Magic with the Locomotive Audio Model 14B Vacuum Tube Compressor Inspired by legendary vintage compressors like the 175B, RCA BA-6A, and Collins 26U, the Locomotive Audio Model 14B is a single-channel vacuum tube compressor that will transport you back in time while adding its own modern twists. Immerse Yourself in Vintage Vibe Experience the best of classic compressors as the Model 14B combines the lightning-fast attacks of the 175B with the smooth, polished output of the Gates Sta-Level. The result? A truly authentic vintage tone that will captivate your ears. Unparalleled Audio Quality The Model 14B is built to deliver excellence in sound reproduction. It features super-premium MuMetal shielded input and interstage transformers, ensuring pristine signal integrity and exceptional sonic performance. Not to mention, the custom output transformer adds its own touch of brilliance to your audio. Modern Enhancements for Precision Embrace the convenience of modern features without sacrificing vintage charm. The Model 14B incorporates a low-frequency cut option to prevent excessive low-end triggering, allowing you to sculpt your sound with precision and finesse. Expand Your Horizons with Stereo Operation Take your creativity to new heights by linking two Model 14B units together for stereo operation. Seamlessly process your stereo room mics, overheads, or inject magic into your mix bus. The possibilities are limitless. Unleash Vintage Magic with the Locomotive Audio Model 14B Revive the timeless sound of iconic vintage compressors with the Locomotive Audio Model 14B. Combining vintage inspiration with modern enhancements, this single-channel vacuum tube compressor will transport your music to new realms of sonic excellence. Don't miss out on this opportunity to own the Model 14B - order now and embark on an unforgettable sonic journey. Features Stereo Link switch Sidechain Low Cut filter control: Off and 70-350Hz Hard-wire bypass switch Compression turned off with full counterclockwise attack position, switching to line amplifier Two position Compress-Limit Switch Two position VU meter switch: Gain Reduction - Output 6BC8 balance adjustment on interior of unit Custom Sifam backlit VU meter XLR input and output connections Custom MuMetal shielded input and interstage transformer Custom output transformer Hand-built in USA Heavy 16 gauge steel chassis1 15v/230v AC mains option on rear Lifetime warranty parts and labor Technical Specs Tubes: (1) 6BC8, (1) 12AY7, (2) 6V6s Input load impedance: 5kΩ Output impedance: <1kΩ Variable Attack: (300 µS - 20 mS) Variable Release: (100 mS - 2 Sec) Compression (4:1 ratio) or Limiting 10:1 ratio) Frequency response: 20Hz-20kHz THD+N: <1% S/N ratio: >70dB Dimensions: 19"w x 3.5"h x 10"d (2u rackspace) Shipping Weight: 20 lbs. Power Consumption (120/240VAC): 42 watt

Locomotive 86B-2 Stereo Tube Preamp Discover a world of sonic possibilities with the 86B-2, an American-style stereo tube preamp meticulously designed for engineers and producers seeking exceptional versatility in their recordings. From luscious vocals to vibrant acoustics, punchy drums to richly saturated tube warmth, this preamplifier offers an expansive sonic palette that will elevate your music to new heights. Embrace the Harmonic Footprint of Authentic Tube Circuitry Drawing inspiration from the golden age of 1950s American-style tube circuitry, the 86B-2 leaves a colossal harmonic footprint on your audio, injecting life and character into every note. Say goodbye to sterile, lifeless signals and welcome the vibrant warmth and organic sound that only genuine tubes can provide. Yearning for Flavor and Color? Longing for more color options without the hassle of switching between preamps? Perhaps you're tight on rack space or just beginning your journey with outboard gear and crave the utmost versatility. Look no further, as the 86B-2 offers precisely the flexibility you seek. Record with mics, then utilize the 'Line' mode to send audio back through tubes and transformers, infusing your sound with captivating coloration. Uncompromising Quality: Transformers and Tubes Prepare for sonic excellence with the 86B-2's premium MuMetal shielded inputs and nickel & steel outputs. These exceptional transformers lay the foundation for pristine audio transmission, ensuring remarkable fidelity and clarity. With an EF86 input tube and a 12AY7 output tube, the 86B-2 amplifies your signal with up to 75 dB of maximum gain, providing ample headroom for any recording scenario. Signal Level at a Glance Keep a close eye on your levels with the built-in output level LED indicator. The three-color LED (green, yellow, and red) offers instant visual feedback, allowing you to maintain optimal signal levels throughout your recording process. Effortless 'Out-of-the-Box' Recording Experience worry-free recording with dedicated XLR input connectors designed for seamless audio transmission without the risk of phantom power interference. Simply connect and record with confidence, knowing that your signal is protected. Unlock Sonic Versatility with the 86B-2 Stereo Tube Preamp Enhance your recordings with the remarkable sonic versatility of the 86B-2 stereo tube preamp. Say goodbye to bland, uninspiring audio and infuse your music with the vibrant warmth and coloration that only genuine tubes can provide. Don't miss out on the opportunity to elevate your sound. Order your 86B-2 now and embark on an unforgettable sonic journey. Features Microphone and high impedance instrument inputs One EF86 & one 12AY7 per channel 4-Position Input Switch: 500 Ω & 1.8K Ω Mic, 10k Ω Line, 1.6meg Ω Polarity reverse switch 20 dB pad switch 100 Hz low cut filter switch DI on for each channel +48 V phantom power XLR mic input, line input and line output connections Premium input and output transformers Wima polypropylene capacitors in signal path Built in USA Heavy 16 gauge steel chassis 115 V/230 V AC mains option on rear Backed by lifetime warranty parts and labor, excluding tubes Technical Specs Microphone input load impedance: 500 Ω or 1.8k Ω Line Input load impedance: 10k Ω Output impedance: 300 Ω 1/4" DI impedance: 1.6meg Ω Output Level LED Color: Greater than -10 dBu = Green Greater than +10 dBu = Orange Greater than +18 dBu = Red 75 dB of gain Frequency response: 20 Hz - 20 kHz Maximum 20 Hz & 1 kHz input level for 1% THD: -18 dBu (+2 dBu with Pad) Maximum output level: +24 dBu THD+N: <1% S/N ratio: >70 dB Dimensions: 19" W x 3.5" H x 10" D (2u rackspace) Shipping Weight: 18 lb Power Consumption (120/240 VAC): 25 watts

Locomotive Audio 40AM-1 A 1940s American-Style Octal Tube Preamp Designed for Big, Thick Results Introducing the 40AM preamp, your gateway to achieving that coveted vintage 1940s sound. Drawing inspiration from iconic models such as the RCA BA-11A and Gates SA-70, this preamp combines design elements from each into one ultimate creation. Packing a powerful punch but versatile enough to be used on a wide range of sound sources, the 40AM will help produce recordings that embody the warmth and character of a bygone era. The 40AM Experience While it is possible to drive into distortion by overloading the input or hitting maximum output headroom, the 40AM's true beauty lies in the subtle nuances available by adjusting any combination of its features. Whether you’re choosing between input transformer windings or utilizing the 5-position Response switch, you can easily tailor the sound of any source. With added features like a 20 dB pad, 85 Hz low cut filter, and a high impedance DI, the 40AM is an essential addition to your rack, allowing you to sculpt the sound you desire. TRANSFORMERS Premium MuMetal shielded inputs and nickel & steel outputs are wound in-house.  TUBES Two octal 6SJ7 tubes (one used as pentode & one strapped as triode) amplify the signal with 52 dB of max gain OUTPUT LEVEL LED A 3-color LED indicator shows signal level. Green -> Yellow -> Red RESPONSE KNOB A 5-position rotary switch allows the user to tailor overall tonal balance for any given source INPUT KNOB The 40AM features a versatile 5-position Input Switch, allowing users to select their preferred input transformer winding configuration in both MIC and LINE modes. This influences the frequency response and the signal level sent to the first 6SJ7 tube. Both the (500Ω) MIC INPUT and (LOW) LINE INPUT configurations provide approximately 4.5 dB of additional gain. LEVEL KNOB The Level knob provides users with the flexibility to make precise signal level adjustments. It's important to note that it interacts slightly with the response knob based on its setting. As the signal is attenuated, users may notice a subtle darkening of the sound. However, by working in tandem with the response knob, adjustments can be made to compensate for any changes in tone. 40AM INSPIRATION    Combining vintage circuits requires time and patience to achieve the perfect balance. However, when executed correctly, you can harness the strengths of each to create an exceptional hybrid. The RCA BA-11A pentode input paired with its triode output and feedback structure of the Gates SA-70 come together to produce the rich, compressed sound of the 40AM, beautifully complementing its 86B and WT-72 siblings.   Unlock Your Creativity Finding the right piece of gear to give your sound that "special something" might be one of the hardest parts of engineering. In our opinion, having an exciting combination of tools at your fingertips is the best way to get your creative juices flowing. The 40AM-2 will help to unlock your audio engineering mind and allow you to focus on creating truly impressive audio.

Locomotive Audio 40AM-2 A 1940s American-Style Stereo Octal Tube Preamp Designed for Big, Thick Results Introducing the 40AM preamp, your gateway to achieving that coveted vintage 1940s sound. Drawing inspiration from iconic models such as the RCA BA-11A and Gates SA-70, this preamp combines design elements from each into one ultimate creation. Packing a powerful punch but versatile enough to be used on a wide range of sound sources, the 40AM will help produce recordings that embody the warmth and character of a bygone era. The 40AM Experience While it is possible to drive into distortion by overloading the input or hitting maximum output headroom, the 40AM's true beauty lies in the subtle nuances available by adjusting any combination of its features. Whether you’re choosing between input transformer windings or utilizing the 5-position Response switch, you can easily tailor the sound of any source. With added features like a 20 dB pad, 85 Hz low cut filter, and a high impedance DI, the 40AM is an essential addition to your rack, allowing you to sculpt the sound you desire. TRANSFORMERS Premium MuMetal shielded inputs and nickel & steel outputs are wound in-house.  TUBES Two octal 6SJ7 tubes (one used as pentode & one strapped as triode) amplify the signal with 52 dB of max gain OUTPUT LEVEL LED A 3-color LED indicator shows signal level. Green -> Yellow -> Red RESPONSE KNOB A 5-position rotary switch allows the user to tailor overall tonal balance for any given source INPUT KNOB The 40AM features a versatile 5-position Input Switch, allowing users to select their preferred input transformer winding configuration in both MIC and LINE modes. This influences the frequency response and the signal level sent to the first 6SJ7 tube. Both the (500Ω) MIC INPUT and (LOW) LINE INPUT configurations provide approximately 4.5 dB of additional gain. LEVEL KNOB The Level knob provides users with the flexibility to make precise signal level adjustments. It's important to note that it interacts slightly with the response knob based on its setting. As the signal is attenuated, users may notice a subtle darkening of the sound. However, by working in tandem with the response knob, adjustments can be made to compensate for any changes in tone. 40AM INSPIRATION    Combining vintage circuits requires time and patience to achieve the perfect balance. However, when executed correctly, you can harness the strengths of each to create an exceptional hybrid. The RCA BA-11A pentode input paired with its triode output and feedback structure of the Gates SA-70 come together to produce the rich, compressed sound of the 40AM, beautifully complementing its 86B and WT-72 siblings.   Unlock Your Creativity Finding the right piece of gear to give your sound that "special something" might be one of the hardest parts of engineering. In our opinion, having an exciting combination of tools at your fingertips is the best way to get your creative juices flowing. The 40AM-2 will help to unlock your audio engineering mind and allow you to focus on creating truly impressive audio.

Locomotive Audio 86B-1 American-Style Mono Tube Preamp – Versatility Redefined with the 86B-1 Looking for an all-encompassing tube preamp that brings warmth, clarity, and a vintage touch to your sound? The 86B-1 Mono Tube Preamp is designed for versatility, capturing everything from shimmering vocals and natural acoustics to punchy drums and richly saturated overdrive. Built with engineers and producers in mind, the 86B-1 offers an expansive tonal range, all wrapped in an American-style mono tube circuit reminiscent of the 1950s.

Locomotive Audio Power-MU 500 The Locomotive Audio Power-MU 500 is a premium stereo vari-mu compressor designed for the 500 series format. Built for discerning audio professionals, it offers the rich warmth and musicality of tube compression with modern workflow features like stepped controls for precise recall. Whether you're gently gluing a stereo bus or pushing for dense harmonic coloration, the Power-MU 500 delivers world-class analog tone with full control. Smooth and Musical Tube Compression At the heart of the Power-MU 500 are two NOS 6N3P tubes per channel, providing true vari-mu operation and the lush, harmonically rich sound only tubes can deliver. Custom interstage transformers ensure a silky compression response without harsh artifacts, preserving the musicality of your source material even under heavy gain reduction. Advanced Control and Total Recall With its AC and DC threshold controls, the Power-MU gives you detailed control over the onset, ratio, and knee of your compression. From soft, transparent dynamics control to punchy, aggressive limiting, the Power-MU 500 adapts to your mix. Its 21-position stepped input, output, and threshold knobs make it easy to recall exact settings—ideal for professional workflows and mix revisions. Essential Features for the Modern Studio The Power-MU 500 includes a sidechain low-cut filter (Off–350 Hz), stereo link switch, hardwire bypass, and a dual-mode VU meter for gain reduction and output monitoring. A custom backlit Sifam VU meter and heavy-duty steel chassis speak to the build quality you'd expect from a hand-made unit, proudly crafted in the USA. Why Choose the Locomotive Audio Power-MU 500? True stereo vari-mu compression in 500 series format NOS tubes and custom transformers for classic tube tone Stepped controls for easy, precise recall Stereo link for consistent imaging Sidechain low cut to prevent pumping from low-end content Hardwire bypass and power switch to preserve tubes and chassis Built like a tank—backed by a lifetime warranty Technical Specifications Tubes: 2 x NOS 6N3P Input impedance: 22kΩ Output impedance: <100Ω Attack time: 10ms–75ms Release time: 150ms–1.5s Frequency response: 20Hz–20kHz THD+N: <1% S/N ratio: >70dB Power Consumption: +16V/260mA, –16V/300mA Weight: 5 lbs Perfect for mixing and mastering engineers looking to add color, depth, and professional-grade control to their signal chain, the Locomotive Audio Power-MU 500 sets a new standard for 500 series stereo tube compression. Whether you're polishing vocals, gluing a drum bus, or mastering a full mix, the Power-MU 500 is your go-to tool for dynamic excellence.