$1299.0 Buy It Now or Best Offer
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Seller Store sweetwatersound
(404599) 99.5%,
Location: Fort Wayne, Indiana
Ships to: US,
Item: 266858614124
Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
Useful Arts:Useful Arts
Preamp Type:Not Available
UAA-SFP-30:UAA-SFP-30
Color:N/A
MPN:UAA-SFP-30
Mix-ready 1-channel Preamp Useful Arts’ concept for their SFP-30 preamp is a no-brainer: one channel of their acclaimed SFP-60 — complete with the exact audio and power circuitry — in a compact tabletop chassis, for less than half the price. Every aspect of the SFP-30 signal path is identical to the SFP-60, except that the SFP-30 lacks a DI input. Other than that, you can now get the great-sounding variable second harmonics of the SFP-60 in a convenient, cost-effective package. As can be found on the SFP-60, the SFP-30 features separate regulated DC power supplies for tube filaments, phantom power, and high voltage. The high-voltage soft-start power supply delivers over 270 volts of clean, regulated power to ensure maximum headroom and the lowest possible noise floor.Tracks that punch through the mix Inheriting all the attractive sonic attributes of its 2-channel stablemate, the Useful Arts SFP-30 is a full-featured, all-tube, 1-channel Sweetwater is an Authorized Useful Arts Dealer Genuine New Item Sweetwater’s 2-year warranty Useful Arts SFP-30 Tube Microphone Preamp 1-channel Tube Mic Preamp with Variable Harmonic Distortion Mix-ready 1-channel Preamp Useful Arts’ concept for their SFP-30 preamp is a no-brainer: one channel of their acclaimed SFP-60 — complete with the exact audio and power circuitry — in a compact tabletop chassis, for less than half the price. Every aspect of the SFP-30 signal path is identical to the SFP-60, except that the SFP-30 lacks a DI input. Other than that, you can now get the great-sounding variable second harmonics of the SFP-60 in a convenient, cost-effective package. As can be found on the SFP-60, the SFP-30 features separate regulated DC power supplies for tube filaments, phantom power, and high voltage. The high-voltage soft-start power supply delivers over 270 volts of clean, regulated power to ensure maximum headroom and the lowest possible noise floor.Tracks that punch through the mix Inheriting all the attractive sonic attributes of its 2-channel stablemate, the Useful Arts SFP-30 is a full-featured, all-tube, 1-channel mic preamplifier designed to make microphone signals punch through a mix without the need for additional processing. Useful Arts views a microphone and preamp as a single unit, the logic being that mic signals are quite useless by themselves, we only know what a microphone “sounds like” after the signal is processed by a preamp. Why degrade the sound of a great microphone by using it with a mediocre preamp? Getting a reasonably clean, flat sound out of a budget preamp is easy. Indeed, to most ears, the sound of an average mic through an average preamp is more or less acceptable. Yet in the context of a mix, that “acceptable” signal is lifeless and utterly undistinguished. And so you turn to processing, trying in vain to create sonic magic in a signal that’s completely devoid of redeeming qualities. The result is invariably an over-processed, even more lifeless sound that’s hard to place in a mix. Enter the Useful Arts SFP-30.Artfully curated tubes Sonically, Useful Arts’ design brief for the SFP-30 was the same as it was for the SPF-60: clear, present, and edgy as opposed to dark and creamy. Specifically, they designed it to make vocals sound forward and intimate. They employed tubes to do what tubes do best — bring out harmonics that increase clarity and euphonics. Each type of tube has its own properties. Correctly used, pentodes add third-order harmonics that contribute to the perception of clarity and bite that make vocals punch. Triodes are known for producing second-order harmonic content, adding richness and thickening up sources without sounding dark. Useful Arts curated the tubes for the SFP-30 accordingly, choosing an EF-806 pentode for the input tube, and high-current ECC82 triodes for the final two gain stages. Nowhere to be found is the pedestrian 12AX7 — a popular preamp tube choice for guitar amps and mass-market tube mic preamp circuits.Amazing-sounding harmonic distortion A preamp’s harmonic distortion has a psychoacoustic spectral effect that humans may perceive as equalization, although in reality, it’s quite different from EQ. While filters output more or less of selected regions of the input signal (along with unwanted phase shifts), the tube preamp is actually adding harmonic content that isn’t in the original signal. The added content is called distortion because it isn’t a faithful reproduction of the input signal. As every audio device ever made introduces distortion, Useful Arts set out to make the SFP-30’s distortion sound amazing. And Sweetwater thinks they succeeded quite nicely.From flat to exuberant: dial it in with the Color knob Unlike preamps that are designed to maintain a fixed distortion-to-gain ratio, the SFP-30’s Color knob puts this artistic choice in your hands. At a setting of 0, the preamp sounds squeaky clean — polite, even. Dimed, it adds around 10dB of gain and increases distortion artifacts nearly tenfold, delivering a full, aggressive sound that sits boldly in a mix and commands the listener’s attention. That’s an incredibly broad creative range, and it lets the SFP-30 serve up very different sounds for different sources, tracks, and musical genres.Useful Arts SFP-30 1-channel Tube Mic Preamp Features: Each gain stage is single-ended Class A Audio Magnetics input and output transformers, plate inductor (custom-wound by CineMag) Output transformer with 50% nickel core Flat frequency response: 20Hz–30KHz, ±2dB Switches: Input selector (rear-panel XLR/front-panel instrument input), highpass filter, input pad, Phase (polarity) Reverse, phantom power, Color knob for variable harmonic distortion Switches pass no signal; they control sealed, gold-plated relays for many years of faithful operation Input and output levels of the triode stages are separately controllable via detented attenuators; combined with the Color knob, the SFP-30 delivers just over 60dB of usable gain New-manufacture JJ EF806 and ECC82 tubes for long life and easy replacement Fully modular construction, with gold-plated connectors used throughout audio path Gold-plated rear-panel XLR connectors for the transformer-balanced inputs and outputs Output level VU meter, op-amp buffered to ensure that the signal is not loaded by the meter Audio power supply features toroidal dual-primary transformer and linear regulation for lowest noise Voltage selector for 115/230-volt operation Faceplate milled from 0.190″-thick aircraft-grade aluminum for maximum rigidity Laser-engraved front-panel markings Handcrafted in Phoenix, AZ SpecificationDetail Preamp Type Tube Number of Channels 1 Phantom Power Yes Pads -22dB Polarity Switch Yes EQ Color control, Highpass filter Tubes 1 x EF806, 1 x ECC82 Analog Inputs 1 x XLR Analog Outputs 1 x XLR (line out) Power Source Standard IEC AC cable Height 4.5″ Depth 10″ Width 9″ Weight 8 lbs. RETURN INFORMATION We want you to be completely happy with your purchase from Sweetwater. If you are not satisfied with your product, you may return it for a refund of the purchase price within 30 days. If your purchase was eligible for Free Shipping, the shipping cost will be deducted from your credit or refund. Returns must be in the complete and original packaging with all accessories and complete documentation (Owner’s Manual, warranty card, quick start guides, etc.), show no signs of wear or use, and include a Return Authorization number or be subject to a restocking fee. Fast, FREE Shipping! Nearly every order received by 3PM Eastern ships the SAME DAY! FREE shipping to lower 48 states. Our central location reaches most states in 1-4 business days 99.95% warehouse accuracy We are proud to provide some of the fastest turnaround times on eBay. We use FedEx or UPS for most items, and USPS for smaller items. Residents of Hawaii, Alaska, and Puerto Rico should contact us for a shipping quote. PLEASE NOTE: We cannot ship large items to PO boxes, please provide an alternate address. If you have questions, feel free to contact us. Buy with confidence! Sweetwater’s been selling on eBay since 2001, with 99.9% positive feedback! More than 30 years in business World-class customer service Fast, FREE shipping Free 2-year warranty on nearly every product Free tech support from audio experts
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