Monday - Friday | 10.00 - 18.00

Thermionic Swift Demo


Unleash the Power of The Swift: A Versatile Two-Channel Equalizer

Discover the remarkable capabilities of The Swift, a versatile two-channel equalizer designed to excel in both individual instrument tracking and enhancing stereo mix buses for that perfect final mix. Inspired by the speed and agility of Britain's fastest bird in level flight, this equalizer is equipped with intuitive controls, ensuring quick and effortless setup. As with our renowned unit, The Phoenix, we have meticulously labeled every control, allowing for precise adjustments and seamless integration into your professional workflow.

The Swift draws influence from two timeless valve recording designs from the "golden days" of audio, incorporating modern enhancements to meet the demands of today's professional users. Our main electronics are rooted in a 1950s EMI desk, offering extended top and bass responses. The active EQ, reminiscent of the revered BAXANDALL design, remains intact, while we have introduced our own touch with the addition of a Presence switch, providing a broad-band lift to mid/high frequencies. This unique feature takes inspiration from Vic Keary's 1963 invention, widely employed in his legendary mixing desks.

The passive mid-lift controls, inspired by the iconic Pultec design, have been thoughtfully incorporated into The Swift. To optimize efficiency and convenience, we have meticulously chosen four frequencies, complemented by three "Q" settings. Our exclusive offerings include a Hi Pass Filter, Mid Cut, and "Air" controls, all implemented in a passive manner. By setting the High Pass Filter at its last position and applying generous bass lift at either 50 or 100 Hz, an intriguing Pultec-type effect can be achieved, combining a shelving bass cut with a low-frequency filter.

To enable precise adjustments, all potentiometers on The Swift operate continuously, providing optimal control without the need for indented settings, ensuring subtlety and reliability. Gain adjustments are conveniently controlled via switches for easy comparison. Engage the BYPASS switch to instantly disconnect the electronics, allowing you to hear the unadulterated original signal. While no metering is included, we have deemed it a mere distraction, ensuring your focus remains on the music. With an impressive +20 dBu output capability, The Swift exhibits minimal distortion and practically negligible noise.

While The Swift draws inspiration from classic designs, our electronic advancements present a significant improvement over their predecessors. Each channel features only two valves (tubes), meticulously chosen for minimal coloration. We have incorporated modern, specially designed Sowter transformers and valves, which have not previously been utilized in this type of circuit. Their superior sound quality and outstanding technical specifications provide us with a slight advantage over the original designers, who likely did not have access to these valves during the design phase.

Key Features of The Swift:

  • All-valve signal path utilizing a combination of NOS and new production valves
  • Merging the finest elements of top-tier American and British equalizers with the magic of Thermionic technology
  • Effortless operation with a clearly labeled front panel for quick adjustments
  • Shelving Bass and Treble lift/cut controls featuring two frequencies each
  • Four frequencies for Mid Cut and Lift, with three "Q" combinations
  • Unique Presence and Air controls exclusive to The Swift
  • Switchable High Pass Filter, including a special last position that, when combined with the Bass lift, delivers captivating sonic possibilities
  • Adjustable gain in precise 0.75 dB steps
  • Frequency response extending below and above human hearing with minimal phase shift
  • Virtually distortion-free performance, even under demanding conditions, and practically noiseless operation
  • Exhibiting the renowned warmth and natural sound signature associated with Thermionic Culture
  • Equally impressive as a mix bus equalizer and for enhancing individual instruments and tracks
  • Handcrafted and meticulously