rega io Headphone Amplifier Instruction Manual
- October 27, 2023
- Rega
Table of Contents
rega io Headphone Amplifier
For user instructions in your language, please visit www.rega.co.uk and go to the download section of your chosen product page.
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:
CASE CAN GET HOT.
CONNECTIVITY
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 Raga 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. Raga recommends
using loudspeakers with a nominal impedance of 6-8 Ω. It is possible to run
speakers as low as 4 Ω, 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 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 magnet (MM) or specifically high output moving coil (MC) cartridges.
-
LINE LEVEL INPUT 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 ratings 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
3.5 mm stereo headphone jack. -
NPUT 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 (see next page).
REMOTE CONTROL
|
---|---
Input 1 (Phono) input| Maximum input 1| Input 2-3 (Line) input| Maximum input
2-3| Power outputs at
sensitivity| (Phono) input level| sensitivity| (Line) input level| 230/115 V
supply voltage
2.1 mV @ 47 kΩ in parallel| 100 mV| 210 mV @ 47 kΩ| 10.25 V| 30 W RMS both
channels
with 220 pF| …| …| …| driven into the rated load
…| …| …| …| of 8 Ω
Headphone output| Power consumption| Frequency response| Fuse ratings| Warning
No load 8 V| 135 W @ 230 V / 220 V| Phono: 15 Hz to 40 kHz| T1.6 AL
250 V: 230 V / 50| Continued high level
32 Ω 1.6 V
54 Ω 2.4 V
300 Ω 5.7 V| / 115 V / 100 V into the rated load of 8 Ω
…
| (-3 dB points) / 27 Hz to
20.5 kHz (-1 dB points) RIAA accuracy: (100
| Hz and 220 V / 60 Hz T3.15 AL 250 V: 115 V| use into 4 Ω may cause the case
to exceed 40
°C above the ambient
Source impedance: 109 Ω| … …| Hz to 10 kHz) ±0.4 dB typically better than| /
60 Hz and 100 V /50/60 Hz| temperature. …
…| …| ±0.3 dB| …| …
…| …| Line: 12 Hz (-1 dB points)| …| …
…| …| to 43 kHz (-3 dB points)| …| …
…| …| Remote control| …| …
…| …| batteries included – 2 x| …| …
…| …| AAA Alkaline.| …| …
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.
LIFETIME WARRANTY
All Rega products are covered by a lifetime warranty against manufacture defects. This warranty does not cover wear and tear. Any unauthorised 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.
References
- Rega – award winning hi-fi, designed and made in England since 1973.
- Rega – award winning hi-fi, designed and made in England since 1973.
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