# Guitar Effect Pedal UNIVERSAL UA UAFX Ruby '63 Top Boost Amplifier - tube‑style top boost

**URL:** https://aio.lv/en/product--universal-ua-gpm-ruby--11895059
**Data updated:** 2026-03-10 00:17 (EET)
**Category:** Musical Instruments
**Manufacturer:** UNIVERSAL
**Manufacturer code:** UA GPM-RUBY
**EAN:** 819937003332
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 429.49 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 354.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--universal-ua-gpm-ruby--11895059

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Pickup points | 01.07.2026 | 1.99 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

The UNIVERSAL UA UAFX Ruby '63 Top Boost Amplifier is a guitar effects pedal that emulates the classic '60s Top Boost circuit. Designed for electric guitarists, it delivers the characteristic treble boost and tonal shaping of the original amplifier channel. Use it for adding presence, cutting through a mix, shaping lead tones, or enhancing clean and overdriven sounds in studio and live setups.

## Long description

The UNIVERSAL UA UAFX Ruby '63 Top Boost Amplifier is a guitar effect pedal that recreates the tonal character of the 1960s Top Boost amplifier channel. It provides a focused treble boost and flexible tonal shaping that mimics the original tube-style response, offering the characteristic presence and detail players expect from that era. The unit is compact and designed for integration into pedalboards and signal chains for both studio and live use.
Advantages
This pedal produces a natural-sounding treble lift and midrange clarity without introducing harshness, reproducing the dynamics and touch sensitivity associated with tube-style top boost circuits. It delivers consistent performance at different volumes and playing styles, and the control layout allows precise adjustment of tone and gain. The robust build and pedalboard-friendly size make it practical for touring and rehearsal environments.
Suitable for
Enhancing lead guitar presence and cut in band mixes
Adding sparkle and definition to clean and lightly overdriven tones
Recreating vintage British amp top-end character in modern rigs
Recording sessions where authentic tube-style treble boost is required
Key specifications
Effect type: tube‑style Top Boost emulation for electric guitar
Controls: tone shaping and gain/level adjustments for precise voicing
Signal path: true analog-style response designed to preserve dynamics
Form factor: compact pedalboard-compatible enclosure
Usage environment: suitable for both studio and live performance setups
How to use
Connect the guitar to the input and run the output to an amplifier or the next pedal in your chain. Start with neutral control settings, then increase the treble or boost control to add presence until the desired cut through the mix is achieved. Use the gain and level controls to balance clean versus driven character; slight increases yield more bite while moderate settings emphasize articulation without excessive distortion. Adjust in-context with the band or backing track for the most effective tonal placement.
Usage recommendations
For best results, place the pedal early in the signal chain, ahead of modulation and time-based effects, to preserve the natural top boost character. When using high-gain amps, use subtle boost settings to avoid excessive brightness; for clean amps, higher boost settings will add vintage-style sparkle. Regularly check battery or power supply specifications and use a stable 9–12V DC source as recommended by the pedal manufacturer.

## FAQ

### How much does the UNIVERSAL UA UAFX Ruby '63 Top Boost Amplifier cost, and is it available for purchase?

The price is 429.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 26.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can UNIVERSAL UA UAFX Ruby '63 Top Boost Amplifier be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All UNIVERSAL products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized UNIVERSAL service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11895059/67320100_large.webp