# Guitar effect pedal Universal Audio UAFX Ruby '63 Top Boost amplifier with analog circuitry and true bypass

**URL:** https://aio.lv/en/product--universal-audio-ua-gpm-ruby--5654345
**Data updated:** 2026-04-03 16:14 (EEST)
**Category:** Sound Cards
**Manufacturer:** universal audio
**Manufacturer code:** UA GPM-RUBY
**EAN:** 819937003332
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 413.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 341.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--universal-audio-ua-gpm-ruby--5654345

## 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

Compact guitar effect pedal Universal Audio UAFX Ruby '63 Top Boost reproduces the classic Top Boost amplifier tone using analog circuitry. Features include authentic vintage EQ/boost voicing and true bypass for signal integrity. Designed for electric guitarists seeking classic '60s amp character for studio and live use, offering hands-on tone shaping and reliable pedalboard integration.

## Long description

The Universal Audio UAFX Ruby '63 Top Boost amplifier pedal is a compact analog guitar effect designed to reproduce the characteristic Top Boost tone of a 1960s amplifier. Built with analog circuitry and true bypass switching, the pedal provides vintage EQ and boost voicing in a pedalboard-friendly format. It offers hands-on control for shaping mid-20th-century clean and driven tones suitable for studio tracking and live performance.
Advantages
This pedal delivers authentic Top Boost amp voicing using analog signal paths and components that preserve tonal nuance and dynamics. True bypass switching maintains signal integrity when the effect is off, while compact construction allows straightforward integration into crowded pedalboards. The control layout provides intuitive adjustments for gain, tone and level so players can quickly dial in classic clean headroom or tasteful breakup.
Suitable for
 Electric guitarists seeking classic 1960s Top Boost clean and overdriven tones
 Studio recording where vintage amp character is required without using a full amplifier
 Live performers needing reliable, compact amp-style boost and EQ
 Painters of tone who combine pedal-driven amp emulation with effects chains
Key specifications
 Analog circuitry that reproduces vintage amplifier tonal characteristics
 True bypass switching to preserve bypassed signal fidelity
 Compact form factor suitable for standard pedalboards
 Dedicated controls for gain, tone and output level for hands-on shaping
 Designed for use with electric guitars and instrument-level signals
How to use
Connect the guitar to the pedal input and the pedal output to your amplifier or next device in the signal chain. Use an appropriate 9V DC power supply if required by the unit. Adjust the gain control to set the amount of boost or breakup, shape the mid and treble content with the tone control, and balance the effect level relative to your bypassed signal with the output control. Engage the footswitch to activate the effect; disengage for true bypass operation.
Usage recommendations
For best results, pair the Ruby '63 Top Boost with a clean or slightly overdriven amplifier channel to reproduce classic Top Boost headroom and breakup. Experiment with guitar pickup selection and position to find the most natural-sounding midrange presence. When using in a pedalboard chain, place the pedal before time-based effects for a more authentic amp-driven tone.

## FAQ

### How much does the Guitar effect pedal Universal Audio UAFX Ruby '63 cost, and is it available for purchase?

The price is 413.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 Guitar effect pedal Universal Audio UAFX Ruby '63 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 audio 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 audio 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/5654345/51851433_large.webp