rega io Integrated Amplifier User Manual

: June 4, 2024
: Rega

Table of Contents

rega io Integrated Amplifier
IMPORTANT INFORMATION
- Warranty
- Safety Instructions
FCC Compliance Statement
SETTING UP
BACK PANEL
SPECIFICATION
References
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rega io Integrated Amplifier

rega-io-Integrated-Amplifier-product

IMPORTANT INFORMATION

Service
With the unit disconnected from the mains, clean only with a microfiber cloth (lightly damp if necessary). Do not remove any coverings; there are no user- serviceable parts inside. If the unit performs erratically or emits smoke or odor, disconnect from the power supply and take it to a qualified service technician.

Warranty

All Rega products are covered by a lifetime warranty against manufacture defects. This warranty does not cover wear and tear. Any unauthorized modifications or failure to follow the Rega recommended guidelines may invalidate the warranty. If returning goods for inspection to your retailer, the original packaging
must be used to preserve the warranty. Damage caused during transport due to incorrect packaging may invalidate your warranty. Replacement packaging is available from any Rega retailer. Your statutory rights are not affected.

Safety Instructions

Do not use this unit near liquids or exposed to moisture. Do not use near sources of heat such as radiators, vents, stoves, or candles. Ensure adequate ventilation around the product, at least 10cm in all directions, and avoid placing the unit on soft surfaces such as long carpets and fabric. Do not open the product enclosure or force objects into openings in the unit. Place the unit on a fixed-level surface where it will not fall or tip. The unit should only be used in moderate climates between 5°C (41°F) and 35°C (95°F). Keep packaging material and small pieces out of reach of children. Unplug the power supply if the unit is unused for extended periods of time.

COMPLIANCE/WEEE
This symbol indicates that the electronic equipment bearing it should not be disposed of as general household waste at the end of its life. The equipment should be disposed of at a collection point for waste electrical and electronic equipment in accordance with national legislation and Directive 2012/19/EU. For more information about how to dispose of your waste electronic equipment, please contact your local authority or retailer where you purchased the product. In the UK, please return your product to the retailer.

FCC Compliance Statement

Per 47 CFR § 2.1077

Manufacturer: Rega Research Ltd.
Model: io MK1

US Responsible Party
The Sound Organisation 1009 Oakmead Drive Arlington, Texas 76011 +1 (972) 234 0182 soundorg.com. support@soundorg.com.

This device complies with FCC Part 15 Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference, and
This device must accept any interference received, including interference that may cause undesired operation.

SETTING UP

The io will work well on most surfaces, such as a shelf or table, provided there is sufficient air around the amplifier to prevent overheating. If using a turntable, magnetic interference can be avoided by positioning the amplifier as far away from the cartridge as the tonearm lead will allow. It is recommended not to stack other hi-fi equipment directly on top of the amplifier. Never place it on fabric or carpet.

WARNING: THE CASE CAN GET HOT.

CONNECTIVITY
The io will work well on most surfaces, such as a shelf or table, provided there is sufficient air around the amplifier to prevent overheating. If using a turntable, magnetic interference can be avoided by positioning the amplifier as far away from the cartridge as the tonearm lead will allow. It is recommended not to stack other hi-fi equipment directly on top of the amplifier. Never place it on fabric or carpet.

All inputs are made via RCA (phono) connectors:

Input 1: Phono (turntables)
Inputs 2 and 3: Line-level inputs

GROUNDING
You may need to ground your turntable via the tonearm. For Rega turntables, grounding is achieved via the Phono lead ground; therefore, a separate ground is not necessary. If your tonearm has a separate ground lead, it will need to be connected to the grounding nut located on the back panel of the amplifier. You can use the nut to clamp down onto the grounding wire, but ensure that the turntable and io are as far away as possible whilst ensuring the safety of both products.

LOUDSPEAKERS
The io is capable of driving all normal hi-fi loudspeakers. Rega recommends using loudspeakers with a nominal impedance of 6-8Ω. It is possible to run speakers as low as 4Ω, however, such units may cause the case to exceed 40°C above the ambient temperature. If in the event that the speaker leads are shorted, the fold-back short circuit protection will protect the output stage from excessive currents. This protection circuit is not placed in the audio signal path and therefore does not affect sound quality.

WARNING:
ALWAYS TURN OFF THE AMPLIFIER WHEN CHANGING LEADS AND SPEAKER CABLES.

HEADPHONES
The io is capable of driving all standard hi-fi headphones. The headphone output has been characterized to match the most commonly used headphones (see specifications for the output levels). When a headphone is inserted into the socket, the speakers will automatically be turned off. However, it is recommended to reduce the volume of the io before connecting any headphones to ensure they are not damaged and prevent any hearing damage.

WARNING:
THE io IS CAPABLE OF GENERATING HIGH-SOUND PRESSURE, POSING A HEARING DAMAGE RISK. TO PREVENT POSSIBLE HEARING DAMAGE, DO NOT LISTEN TO HEADPHONES AT HIGH LEVELS FOR LONG PERIODS OF TIME.

BACK PANEL

Phono Stage Input 1 (Turntable) – This input is a phono stage that can be used with moving magnets (MM) or specifically high output moving coil (MC) cartridges.
Line Level Inputs 2 & 3 – Line inputs enable the connection of any additional sources such as CD players, Blu-ray players, streamers, etc.
Loudspeaker Output – Top row: Left speaker – red and black, Bottom row: Right speaker – red and black
Mains Input – Only for use with mains supply stated on the rating label.
Fuse – Replace only with specified fuse (see specifications for the fuse rating of your product).
Grounding Nut – For grounding third-party tonearms.
INPUT SELECTION
On/Off Button – To turn the io on, press the black power button. After a few seconds, you will hear a relay ‘click’ and the io will be operational.
Headphone Socket – 3.5mm stereo headphone jack.
Input Display – To change between inputs, press the small black button located next to the row of input digits to cycle through 1-3. The selected input is highlighted by the number lighting up in red. Input selection can also be changed with the remote.
Volume Control – The volume control has a minimum and maximum value which is indicated by the notch. The volume does not reset after each use. Before plugging in headphones, make sure the volume is reduced.
Mute – Mute on the io is controlled by the remote.

SPECIFICATION

Input 1 (Phono) input sensitivity
2.1mV @ 47kΩ in parallel with 220pF
Maximum input 1 (Phono) input level
100mV
Input 2-3 (Line) input sensitivity
210mV @ 47kΩ
Maximum input 2-3 (Line) input level
10.25V
Power outputs at 230/115V supply voltage
30W RMS both channels are driven into the rated load of 8Ω
Headphone output
- No load = 8V
- 32Ω = 1.6V
- 54Ω = 2.4V
- 300Ω = 5.7V
Source impedance
109Ω
Power consumption
135W @ 230V / 220V / 115V / 100V into the rated load of 8Ω
Frequency response
- Phono: 15Hz to 40kHz (-3dB points) / 27Hz to 20.5kHz (-1dB points)
- RIAA accuracy: (100Hz to 10kHz) ±0.4dB typically better than ±0.3dB Line: 12Hz (-1dB points) to 43kHz (-3dB points)
- Remote control batteries included: 2x AAA Alkaline.
Fuse ratings
- T1.6AL 250V: 230V / 50Hz and 220V / 60Hz
- T3.15AL 250V: 115V / 60Hz and 100V / 50/60 Hz