OOR by Ferrum user’s manual
OOR by Ferrum user’s manual OOR by Ferrum user’s manual
INTRODUCTION OOR, the only headphone amplifier with a soul. After the initial success of our firstborn HYPSOS, we at Ferrum set out to follow through on our ideas of creating category-defining audio products. We tasked our most talented and promising engineer to focus on analogue audio in it’s purest form and to create a headphone amplifier. He started from the ground up and presented us the early drawings of OOR, a headphone amplifier with part of his soul forged right into it.
CONTENTS 1. Important Safety Info 3 2. Box Content 4 3. Device Features 4 4. OOR Overview 5 Front Panel Overwiev 5 4.2. Back Panel Overwiev 6 5. Connecting The OOR 7 6. Getting Started 8 4.1. 6.1. Using OOR For The First Time 8 . Bypass Function 6.2. 8 6.3. Using OOR With Amplifiers Or Active Speakers 8 7. Technical Spec 9 8. Warranty 9 9. Contact Ferrum 10 10. Warninig 11.
1. IMPORTANT SAFETY INFO WARNING: To reduce the risk of fire, electric shock or enclosure discoloration, be sure that the apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed near or on the apparatus. Read and follow all the instructions before connecting or operating the component. Keep this manual so you can refer to these safety instructions. Heed all warnings and safety information in these instructions.
When replacement parts are required after the warranty period, be sure the service technician has used replacement parts specified by the manufacturer or have the same specification as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.
4. OOR OVERVIEW 4.1. Front Panel Overview A. Ferrum logo - brightness adjustable B. 4-pin XLR headphones output C. 6.3 mm jack, TRS headphones output D. Rotary input selector and on/off switch E. Rotary gain selector - allows you to match a gain level to your headphones: - for single ended headphones (6.3 mm jack) you can choose (from left to right): -10 dB, 0 dB, +10 dB - for balanced output (4-pin XLR) you can choose (from left to right): -4 dB, +6 dB, +16 dB F. Volume knob A D E Figure 1.
4.2. Back Panel Overview A. XLR input B. RCA input C. XLR output D. RCA output E. Bypass rotary switch - allows you to bypass OOR’s internal volume potentiometer. This option is useful when you control volume at the source Note: For more information please look at paragraph “6.2. Bypass Function”. WARNING! Use with caution! Enabling bypass might cause hearing damage or destroy your headphones. F. Logo brightness potentiometer G. Ferrum Power Link DC input H. The 2.5/5.
5. CONNECTING THE OOR Note: Please connect all cables before switching on the OOR. XLR MALE XLR OR OR TRS RCA FEMALE XLR OR RCA OR PSU SOURCE AMP Figure 3.
6. GETTING STARTED 6.1. Using OOR For The First Time Make sure the signal cables (optionally you can also connect an amplifier, active speakers, etc.) are connected to the OOR before turning it on. Set the Gain knob to the first position (-dB) and the Volume knob to about 25%. Turn on the OOR using the input selector - select either the RCA or XLR input. Now while listening to music, gently raise the volume using the Volume knob.
7. TECHNICAL SPEC Gain (dB): Balanced -4 dB, +6 dB, +16 dB / single ended -10 dB, 0 dB, +10 dB Operation: Fully balanced, proprietary discrete power amp technology Inputs: XLR, RCA, 2.5 mm DC connector centre positive, proprietary 4-pin DC connector Headphones Outputs: Balanced 4-pin XLR, 6.35 mm jack Rear Outputs: XLR, RCA Frequency Response: 20 Hz – 100 kHz 0.1 dB Output Power Single Ended: 0.4 W into 300 Ω, 2 W into 60 Ω Output Power Balanced: 1.6 W into 300 Ω, 8 W into 60 Ω THD: <0,0003% / -110 dB 0.
9. CONTACT FERRUM In case of questions, problems or suggestions regarding its form or contents, please contact us via our support system available on our website: www.ferrum.audio/support 10. WARNING Excessive sound pressure from speakers and headphones can cause hearing loss. In order to use this product safely, avoid prolonged listening at excessive sound pressure levels. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
12. INFORMATION ON DISPOSAL FOR USERS OF WASTE ELECTRICAL & ELECTRONIC EQUIPMMENT (PRIVATE HOUSEHOLDS). The Wheelie Bin symbol on the products and/or accompanying documents means that used electrical and electronic products should not be mixed with general household waste. Disposing of this product correctly will help save valuable resources and prevent any potential negative effects on human health and the environment.
