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Description
Source Audio True Spring Reverb with Tap Tempo SwitchMaker: Source Audio Model: True Spring Reverb Condition: New Description: The True Springs reverb effects are based on a mechanical design originated by the Hammond Organ Company in the late 1930s. This stark design uses a pair of input and output transducers to inject an instruments dry signal into an actual set of spring coils and capture the very distinct reverberations as the sound bounces back and forth within the springs. Of course, Leo Fender
Maker: Source Audio
Model: True Spring Reverb
Condition: New
Description:
The True Spring’s reverb effects are based on a mechanical design originated by the Hammond Organ Company™ in the late 1930s. This stark design uses a pair of input and output transducers to inject an instrument’s dry signal into an actual set of spring coils and capture the very distinct reverberations as the sound bounces back and forth within the springs. Of course, Leo Fender adopted this design in the 1960s with the some of his "blackface" amplifiers and a revolution was born.
- Short Spring Reverb: Modeled after the unmistakable twang of "blackface" amplifiers of the 1960s. After extensive research we found tremendous diversity in the spring reverb sounds of a variety of amps. Some offered a tighter, less animated tone while others sounded “drippier,” with longer sustain and livelier reverb trails. The SHORT Spring reverb engine offers a taut sound with a quick decay and smooth trails.
- Long Spring Reverb: Produces long and deep reverb decays with noticeable “drip” and highly animated trails. The LONG Spring engine is not as dramatic as the TANK Reverb engine, but does offer an extremely authentic representation of some of the livelier reverb tanks found in vintage combo amps.
- Tank Spring Reverb (Outboard Spring): Captures the unmistakable effect of the tube driven outboard spring tanks of the 60s. The sound of reverb tanks like the classic Fender 6G15™ are characterized by their “drippy” attack and animated trail. This original two-spring design produces a bouncing, delay like sound inseparable from the early days of surf rock and spaghetti western soundtracks.
The Tremolos
The True Spring Reverb also allows you to combine any of its iconic spring reverbs with any of the pedal's three tremolo effects. The True Spring's tremolos are the same organic effects that originally appeared in our Vertigo Tremolo - the winner of Guitar Player’s “Hall of Fame 2015” and Premier Guitar’s “Premier Gear Award.”
- Opto Tremolo: Optical tremolo (a.k.a. “Photocell Tremolo”) is the effect found in many combo amps of the 1960s. This version of tremolo relies upon a neon light bulb and a light dependent resistor called an "optocoupler." The non-symmetrical aspects of the light and the optocoupler give the tremolo a distinct choppy character.
- Harmonic Tremolo: This unique effect first appeared in Fender™ “brownface” amps made between 1959 and 1963, which alternately modulated the levels of bass and treble frequencies in the audio signal. The result is a very pleasing and complex tremolo that has characteristics reminiscent of a phaser.
- Bias Tremolo: This approach to tremolo involves using an LFO to modulate the bias voltage of the tubes in an amplifier. This essentially pushes the tubes in and out of saturation. The result is a smooth amplitude modulation with a mild overdrive created by the tube saturation.
Features:
- Three Distinct Spring Reverb and Tremolo Effects.
- Two Modes of Operation – Use the pedal in Standard Mode for a classic (non-preset) stompbox experience or turn on Preset Mode and save a user preset (including reverb/tremolo effects and knob positions) to each of the three toggle switch positions.
- Flexible Stereo Routing – The True Spring is equally at home in a mono or stereo rig. The pedal’s stereo inputs and outputs offer a variety of routing options such as Stereo to Stereo, Mono to Mono, Mono-to-Stereo, Stereo Sum-to-Mono and External Loop Mode.
- Universal Bypass — Select Active Analog (Buffered) or True Bypass.
- Secondary Tremolo Controls - Press and hold the CONTROL INPUT button to access the True Spring's tremolo effects (DWELL knob controls tremolo DEPTH / TONE knob controls tremolo RATE / toggle switch selects tremolo type).
- Expression Control — Compatible with Source Audio expression pedals and the Hot Hand 3 Universal Wireless Effects Controller. Assign up to three simultaneous parameters with editable depth and direction.
- External Tap Tempo – Use the Source Audio Tap Switch to tap in the tremolo rate with a choice of four different beat divisions (quarter, eighth, triplet, and sixteenth).
- External Tremolo Engage and Bypass – Use the Source Audio Tap Switch to engage or disengage the tremolo effects on top of an active spring reverb.
- Includes 9v DC power supply (300mA / Negative Tip)
- Includes 1/8” to 1/4” cable for Neuro Mobile App connection.
- Power Consumption — 165mA
- USB port — Connects to Mac or Windows PC for firmware updates and the forthcoming in-depth effects editing software.
- Brushed anodized aluminum housing.
- Dimensions: L: 4.5 in./11.4cm x W: 2.75 in./7cm x H: 2 in./5.1cm (including knobs)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Comfortable and don't leak
Color: Blue
These are my kids favorite swim goggles. The adjusting in the back helps them fit better and doesn't get tangled in his hair. This also don'ts leak like some other brands. Mom approved.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Cooler
Color: Clear Blue 4 PK, Size: 4 Pack
I absolutely love these Cool Coolers by Fit & Fresh! They are truly amazing and have made such a difference in keeping my food fresh. The slim XL design is perfect because it fits easily into my lunch bag or cooler without taking up too much space.
What really impressed me is how quickly they freeze and how long they stay cold. They keep everything nicely chilled for hours, which is exactly what I need for busy days. Plus, they are reusable and very durable, so they’re a great eco-friendly option.
The quality is excellent, and the performance is even better than I expected. I highly recommend this product to anyone looking for reliable and efficient ice packs!
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Keep Everything Cold All Day!
Color: Multi (4 Pack), Size: 4 Count (Pack of 1)
These ice packs are absolutely perfect! The 4-pack gives me plenty of options to keep drinks, lunch, and snacks cold no matter where I go, whether it’s work, a picnic, or a day trip. They freeze quickly, stay cold for hours (I live in a really hot climate and they stay cold in my car all day), and fit perfectly in lunchboxes, coolers, or insulated bags without taking up too much space because they are pretty thin.
The packs are very durable, completely leak-proof, and easy to clean, which makes them convenient for everyday use. I love that having four means I can always have a frozen one ready while the others are thawing. Overall, this set is reliable, long-lasting, and makes keeping food and drinks cold simple and stress-free — I would highly recommend them to anyone!
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Reviewed in the United States on March 5, 2026
★★★★★ 5
Such cute and fun ice packs
Color: Pink (4 Pack), Size: 4 Pack
These cute pink ice packs are everything I was looking for — functional, compact, and absolutely adorable!
Why I love them:
Super cute design: The pink color is just the right shade — fun, bright, and adds a touch of personality to my lunchbox or cooler. I’ve even had coworkers and friends ask where I got them!
Perfect size: They’re compact enough to fit in lunch bags, bento boxes, or small coolers, but still keep everything nice and chilled for hours.
Stays cold: For their size, these ice packs do a great job keeping my food fresh. I pop them in the freezer overnight and they’re still cool by lunchtime.
Reusable and durable: They’re well-made and haven’t leaked or cracked after repeated use. Super easy to wipe clean and pop back in the freezer.
Great for more than just lunch: I’ve also used them for soothing small injuries, skincare routines, and even in mini coolers for outdoor picnics. They're versatile and cute enough to use anywhere.
Final Thoughts:
If you’re looking for ice packs that are both functional and fun, these are a win. They’re especially great for kids' lunches, but honestly, I bought them for myself — and I love them!
Highly recommend for anyone who wants a little extra chill with a pop of pink charm 💕
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Reviewed in the United States on July 7, 2025
★★★★★ 4
Made to keep regular lunches cold all day.
Color: Multi (8 Pack), Size: 8 Pack
XL fits in regular-size kids lunchboxes. I bought eight to put two in each of four lunchboxes, and all fit perfectly. They freeze overnight, go in at 7:00 AM, and are still cold when the kids come home around 4:00 PM. These ice packs are too big to easily fit in my freezer door shelf, but they do stack up there so it's not a deal-killer. They do sweat a little, so expect some drops of water in the lunchboxes. The seal is solid - I have no worry of leakage. Overall, these are good ice packs.
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Reviewed in the United States on November 24, 2025
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