What's In The Box

• (1) SR1a Earfield Monitor
• (1) Amp/Ribbon Interface
• (1) Cable - Headphone to Interface
• (2) Red Banana Cables - Interface to Amplifier (L+/R+)
• (2) Black Banana Cables - Interface to Amplifier (L-/R-)
• (1) Flight Case - Water Proof - Foam Padded

Amplifier Requirements

Your SR1a Earfield Monitor requires an outboard amplifier with a minimum of 100-watts RMS. Amplifiers of 200-500 watts RMS are also suitable and even preferred, but care must be given to not overdrive the ribbon.

When overdriving the ribbon, you'll notice a slapping sound, caused by the ribbon reaching its excursion limits. For this to occur, volume level will be very high with bass heavy content.

In general - Better the amp, Better the sound.

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Audio Connections

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Rear View of Amp/Ribbon Interface

Diagram of the rear panel of the Amp/Ribbon Interface. It shows speaker-level inputs with binding posts labeled 'RIGHT' and 'LEFT', each with positive '[+]' and negative '[-]' terminals, and specifications for total load (6-OHM TOTAL LOAD) and maximum wattage (150-WATTS MAXIMUM). It also indicates 'MADE IN SERBIA'.

The rear panel binding posts of the Amp/Ribbon Interface connect to the speaker outputs of your amplifier, using (4) banana cables (provided).

Front View of Amp/Ribbon Interface

Diagram of the front panel of the Amp/Ribbon Interface. It features a 4-pin MALE/XLR connector labeled 'SR1a EARFIELD™ MONITOR' and indicates '0.2 OHM LOAD'.

The front panel, 4-pin MALE/XLR, is for connection to the SR1a, using the (1) FM/XLR to TRRS/TRRS cable (provided).

XLR is "gender-reversed" to prevent conventional headphone amps from being used, with the SR1a, due to the 0.2-ohm load presented to the amplifier by the ribbons.

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SR1a Vertical Positioning

Diagram showing the SR1a headphone positioned vertically. An inset image highlights the ear canal, indicating it should align with the vertical center of the headphone's ribbon driver. Adjustments are made via the leather headband.

The ear canal should be at the vertical center of the left and right ribbon.

Adjustments can be made via the leather headband.

For Camber and Lateral Force adjustments, please refer to our video "SR1a Fitting Adjustments". This can be found on our website, under "support" and on YouTube.

SR1a Horizontal Positioning

Diagram showing a top-down view of a head wearing headphones. It illustrates the recommended initial horizontal placement of the SR1a's inner grill, approximately 1/4 inch from the edge of the outer ear. This position is good for most recordings.

You are encouraged to experiment with wider horizontal positioning especially with orchestral and acoustic music.

Limited 5-Year Warranty

RAAL-requisite warrants its products to be free from defects in material and workmanship under normal use and service for a period of five (5) years from the date of delivery.

This warranty is only made to the original purchaser and is not transferable. In the event of failure of a product under this warranty, RAAL-requisite will repair, at no charge, the product returned to its factory. RAAL-requisite may, at its option, replace the product in lieu of repair. If the failure has been caused by misuse, neglect, accident or abnormal operating conditions, repairs will be billed at the normal shop rate. In such cases, an estimate will be submitted before work is started, if requested by the customer.

ALL OTHER WARRANTIES ARE HEREBY DISCLAIMED.

This warranty does not cover:

• normal wear and tear or normal aging of the product;
• cosmetic damage, including but not limited to scratches and dents;
• damage through accident, abuse, neglect, misuse, natural events, or other external causes;
• damage through misapplication, overloading, or improper useage;
• damage due to improper maintenance and repair;
• damage as a result from the shipping and handling by third parties; or
• product alterations.

Limitation of Liability:

EXCEPT AS PROVIDED IN THIS WARRANTY AND TO THE MAXIMUM EXTENT PERMITTED BY LAW, RAAL-REQUISITE IS NOT RESPONSIBLE FOR ANY DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR INJURIES RESULTING FROM ANY BREACH OF WARRANTY OR CONDITION, INCLUDING BUT NOT LIMITED TO LOSS OF USE; LOSS OF REVENUE; LOSS OF ACTUAL OR ANTICIPATED PROFITS; LOSS OF BUSINESS; LOSS OF OPPORTUNITY; LOSS OF GOODWILL; LOSS OF REPUTATION; OR ANY DIRECT OR INDIRECT OR CONSEQUENTIAL LOSS OR DAMAGE WHATSOEVER CAUSED INCLUDING THE REPLACEMENT OF EQUIPMENT AND PROPERTY.

Limited 5-Year Warranty cont...

Customer Responsibilities:

Customers may be required to provide proof of purchase date, respond to questions designed to assist with diagnosing potential issues and follow RAAL-requisite's directions to make a warranty claim. DO NOT OPEN THE PRODUCT. OPENING THE PRODUCT MAY VOID YOUR WARRANTY. To make a warranty claim:

1. Contact RAAL-requisite either through:

• phone: (818) 437-0779
• email: danny@raalrequisite.com
• office: 2175 Goodyear Ave, STE 110. Ventura CA. 93003-7761

RAAL-requisite's Responsibilities:

1. RAAL-requisite will try to assist you in operating or repairing your product.
2. If a replacement part is necessary, RAAL-requisite will send a free replacement part.
3. If a replacement will not resolve your problem, RAAL-requisite may ask you to return your product to their warehouse. Upon receiving the product at the warehouse, RAAL-requisite will inspect the product.
4. If the product has a manufacturing defect, RAAL-requisite will send a replacement part. If replacement of the part or repair of the unit is not possible, RAAL-requisite will send a replacement product.
5. Customers who purchased the product from a third-party vendor are not eligible for a refund from RAAL-requisite.

RAAL-REQUISITE SHALL HAVE THE EXCLUSIVE RIGHT TO DETERMINE IF A UNIT IS COVERED UNDER ITS WARRANTY POLICY.

Severability: The invalidity, illegality or unenforceability of any provision of this warranty shall not render the other provisions invalid, illegal or unenforceable.

Governing Law and Jurisdiction: This warranty shall be governed by the laws of the State of California. The courts of California shall have the exclusive right to adjudicate any disputes arising under or in connection to this warranty.

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