Bartel Swingland
The Swingland’s proprietary design architecture is engineered to shape the harmonic content, dynamics, and touch response and add refinement and expression while maintaining all th e color and character that define vintage tube amp tone. It goes beyond the usual treatments such as master volume circuits, power scaling, and attenuators in its ability to get the harmonic content right, eliminate harshness, and deliver an engaging and satisfying playing experience even at very low volume. That same design approach also shapes how the Swingland voices a wide range of classic tones. The new preamp design makes it easy to dial in a wide range of classic voicings reminiscent of popular amps of the 50s, 60s, and 70s using its wide-ranging midrange voicing control and tilt-eq style tone control. Additional controls such as presence, harmonic balance, and headroom provide fine control over tonal detail. Features such as tube-driven spring reverb and line-out capability round out the design, giving the Swingland the versatility required for both home playing and serious studio use. USER MANUAL Features Handwired turret board construction High headroom input stage with selectable gain/headroom 2-band EQ featuring midrange voicing control with boost and cut capabilities, and tilt-spectrum “tone” control Tube-driven spring reverb with dwell and mix controls Transformer-loaded complementary overdrive stage with innovative harmonic balance circuit Harmonic balance control to fine-tune the onset of overdrive and the balance of high and low order harmonics Master Volume control Push-Pull triode output stage with custom designed output transformer Presence control Tuned speaker cabinet optimized for deep, rich sound at low volume Line Out Interface (LOI) connector for use with a variety of external line-out devices tailored to live use, home, and studio Specifications Output Power Preamp Tubes Output Tubes Reverb Pan Speaker Color Scheme Dimensions Weight Price 3W RMS 1 x 12AX7, 2 x 12AT7, 1 x 12AU7 1 x 6SN7GT Full size 3-spring Accutronics 12″ Celestion Alnico Blue, 8 Ohms Black tolex, gray&silver grill, white&silver piping 16″ W 19″ T 11″ D 32lbs $4195 Sound and Voicing The Swingland doesn’t borrow from past designs and is not intended to duplicate the sound of any particular vintage amp. Instead, it offers a range of EQ voicings flexible enough to cover a wide range of classic sounds, from glassy and mid-scooped 1960s Fender style tones, to thicker sounding tweed tones, to more mid-forward Vox and early Marshall style tones. It has a sound all its own, with generous depth, richness, and harmonic complexity. It’s not what you might expect from a low-watt amp. The dynamics and harmonic complexity make it a joy to play, even when dialed in with a perfectly clean tone. It never feels stiff, sterile, or harsh. Perhaps its most useful characteristic (and the most difficult to achieve) is its ability to make the transition from a clean to overdriven sound in a progressive, controlled manner. Many amps are plagued by an excess of glassy, crackly “grit” which happens early in the edge of breakup before the underlying tone has been able to develop harmonically. The Swingland makes the transition from clean to overdriven by progressively adding measured amounts of lower order harmonics which add “edge” to the note, like a non-master-volume amp does at the edge of breakup. Just a touch of “grit” emerges to complement the “edge” created by the harmonic development and complete the vintage sound. The proportion of “grit” to “edge” at the edge of breakup is a critical factor in your tone, and it can be fine-tuned with the harmonic balance control. When driven further into overdrive and distortion, the Swingland comes alive with its own unique voice. It’s a cross between the intense note bloom and harmonic richness that you associate with (for example) a Dumble/ODS style amp, and the more aggressive attack, grit, and character of a traditional non-master-volume amp such as a Super Reverb or JTM45. The speaker cabinet also really adds a lot to the playing experience. It creates a sound image that is both intimate and focused as well as room filling, even at very low volume. It has extraordinary depth, fullness and note bloom which make it engaging to play. Design Description INPUT STAGE The input stage offers both a high headroom, brighter voiced selection and a higher gain, neutral voiced selection via the headroom pull switch on the volume control. These two selections help match the amp to both low and high output pickups, and provide options for hitting the amp with boost and overdrive pedals. PREAMP The Swingland preamp is a unique proprietary design which contributes to the dynamics and harmonic richness of the amp while providing a lot of tone shaping capabilities. The midrange voicing and tilt-EQ style tone controls work together to make it easy for you to dial in a wide range of voicings The voice of a guitar amplifier is primarily determined by the midrange and how it relates to the rest of the spectrum, and the Swingland’s midrange voicing control gives you a great deal of control over this region. It’s a much more powerful tone shaping tool than a conventional tube amp’s standard midrange control. The tilt-EQ style Tone control shifts the entire spectrum, so it makes the tone either bassier or more trebly without affecting the voicing dialed in with the midrange control. The Midrange voicing control allows for both boosting and cutting midrange frequencies to designed to deliver specific classic response curves. The modified tilt-EQ style Tone control affects the full frequency spectrum. At its lowest setting, bass is boosted and treble is cut. At its highest setting, treble is boosted and bass is cut. REVERB The Swingland includes a tube-driven spring reverb circuit with both Dwell and Mix controls. The Dwell control determines how lush and springy the reverb effect sounds. The Mix control adjusts how much of the reverb sound is added to the dry signal. The reverb circuitry is designed for an unusually wide dynamic range. This means that you’ll always get a lush and consistent reverb sound regardless of the sound you have dialed in from clean to fully overdriven. The reverb pan used is a full sized 3-spring unit which has a more controlled (less springy) response and more lush sound than the usual 2-spring pan used in most tube amps. OVERDRIVE STAGE The Swingland includes a unique and sophisticated overdrive stage developed from scratch, specifically for this model. When driven hard, it creates a sound which combines the rich harmonics and straining note bloom of a Dumble/ODS style amp with the color, character, and aggression of a vintage non-master tube amp. It’s designed as a complementary, transformer loaded stage under control of the proprietary Harmonic Balance circuit. This circuit controls the harmonic profile of the overdrive and distortion produced by the stage and also controls the behavior at the edge of breakup. It can be fine tuned with the Harmonic Balance control located on the back panel of the amp. Aside from creating overdrive and distortion textures, the overdrive stage also plays a role in fattening up and adding weight and authority to clean tones, so they will never feel stiff or sterile at any volume. OUTPUT STAGE The Swingland has a push-pull triode output stage using a 6SN7 tube and a custom designed output transformer made by Lenco (in Chicago) to produce 3W of clean output power. This output stage remains clean and does not add clipping or overdrive of its own, no matter how hard you drive the amp. When driven hard at full volume, it adds just a touch of warmth and fullness. It was designed this way so that it would not ruin the finely calibrated harmonic profile of the signal generated by the overdrive stage. This also means that the sound and feel will remain consistent at all volume levels (as controlled by the master volume control). Within the output stage, a Presence control has been implemented to fine tune the upper range of the high frequency response. This is useful for compensating for either a dark or bright sounding room. LINE OUT INTERFACE The Swingland includes a 5-pin XLR jack on the back panel for connection to a range of Line Out Interface devices to be introduced late in 2026. These devices include functions such as analog mic/cabinet sims, headphone amplifiers, PA and DAW interfaces, and more. More info will become available as development proceeds over the next few months. Masterbuilt Quality The Swingland is built with the same build quality as our three legacy models. We are a masterbuilt craft shop and this is how we work. The chassis is built with traditional handwired methods using turret board construction and the finest parts and materials. The cabinets are built in our onsite cabinet shop and upholstered here as well. As a masterbuilt amp, designer Mark Bartel is involved in the build process at every stage of chassis and cabinet construction from build start to final test.
