Categories: FURMAN

FURMAN AC-210 A E Compact Power Conditioner Owner’s Manual

FURMAN AC-210 A E Compact Power Conditioner


Unfortunately, traditional AC power conditioners have been designed for unrealistic laboratory conditions. Prior technologies, whether multiple-pole or conventional series-mode filters, could actually harm audio and video performance more than they help, due to the resonant peaking of their antiquated, non-linear designs. Under certain conditions, these designs can actually add more than 10 dB of noise to the incoming AC line! Worse still, lost digital data, the need to reboot digital presets, or destruction of sensitive digital converters are frequently caused by excessive voltage spikes and AC noise contaminating the equipment ground. Furman’s LiFT takes a different approach, ensuring optimal performance through linear AC noise filtering with no ground contamination.


To obtain best results from your Furman AC-210A E Power Conditioner, please be sure to read this manual carefully before using.

To reduce the risk of electrical shock, do not expose this equipment to rain or moisture. Dangerous high voltages are present inside the enclosure. Do not remove the covers. There are no user serviceable parts inside. Refer servicing to qualified personnel only.


  1. Please read and observe all safety and operating instructions before installing your unit. Retain these instructions for future reference.
  2. Your unit should not be used near water – for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, etc.
  3. Do not place your unit near heat sources such as radiators, heat registers, stoves or other appliances that produce heat.
  4. The unit should only be connected to a 230-240 VAC, 50Hz, 10 Amp grounded electrical outlet. Do not defeat the ground or change polarization of the power plug
  5. Route the power cord and other cables so that they are not likely to be walked on, tripped over, or stressed. Pay particular attention to the condition of the cords and cables at the plugs and the point where they exit your unit. To prevent risk of fire or injury, damaged cords and cables should be replaced immediately.
  6. Clean your unit with a damp cloth only. Do not use solvents or abrasive cleaners. Never pour liquid on or into the unit.
  7. Your unit should be serviced by qualified service personnel when:
    • The power supply cord or the plug has been frayed, kinked, or cut
    • Objects have fallen or liquid has spilled into the unit
    • The unit has been exposed to rain or other moisture
    • The unit does not appear to operate normally or exhibits a marked change in performance
    • The unit has been dropped, or the enclosure damaged
  8. Your unit requires that a safety ground be present for proper operation. Any attempt to operate the unit without a safety ground is considered improper operation and could invalidate the warranty.
  9. Do not attempt to service your unit beyond what is described in this manual. All other servicing should be referred to qualified service personnel..


The Extreme Voltage Shutdown LED is normally off. If an input voltage in excess of 275VAC is sensed, either on initial power-up or during normal operation, the AC-210A E will shut off power and this indicator will light.

If the mains power is above the high cutoff voltage and has caused the unit to remove power from its outlets, it cannot restore power until the mains power returns to a lower nominal level. If the main power remains high, check the source of the problem, and if necessary, change the AC source.

Although the Furman SMP circuit assures protection from transient voltage spikes and surges, nature has a way of occasionally creating electrical forcesthat are beyond the capabilities of any TVSS device to absorb without some degree of damage. In the rare instance that this occurs, the green “Protection OK” LED indicator located on your front panel will turn off. If this happens, some level of protection from voltage surges will remain, but the Furman’s clamping voltage rating will be compromised. The unit must be returned to Furman Sound, or an authorized Furman Service center for repair.


Symptom: No power to the AC outlets.

  • Possible Cause: Circuit breaker has tripped due to excessive load.
  • Action Needed: Unplug one piece of equipment from the AC-210A E, and push the re-set tab into the circuit breaker bezel.
  • Symptom: No power to the AC outlets, even after the circuit breaker has been re-set.
  • Possible Cause: Protection devices are damaged.
  • Action Needed: Contact Furman Service Department at
  • Symptom: Extreme Voltage (EVS) indicator lit.
  • Possible Cause: Input voltage is outside of nominal operation levels. This may be caused by wiring faults at your location or downed power lines.
  • Action Needed: Unit will automatically reset and resume operation once the problem has been corrected.


The AC-210A E can be conveniently and inconspicuously mounted within an equipment rack or on the rear panel of your video display using the included brackets. Refer to the illustrations below for instructions. The brackets can be positioned facing in or out, as shown, to accommodate various installation requirements.


If you require technical support or equipment service, please contact the Furman Service Department at All equipment being returned for repair must have a Return Authorization (RA) number. To get an RA number, please email the Furman Customer Service Department. Before returning any equipment for repair, please be sure that it is adequately packed and cushioned against damage in shipment, and that it is insured. We suggest that you save the original packaging and use it to ship the product for servicing. Also, please provide a note giving your name, address, phone number, RA number and a description of the problem.


SAVE YOUR SALES RECEIPT! The receipt is your proof of purchase and con-firms the product was purchased at an authorized Furman dealer. It will need to be submitted to Furman in order to process any warranty claims. Furman, a brand of Nortek Security & Control LLC, warrants its AC-210A E (the “Product”) as follows: Furman warrants to the original purchaser of the product that the product sold hereunder will be free from defects in material and workmanship for a period of three years from the date of purchase. If the product does not conform to this Limited Warranty during the warranty period (as herein above specified), purchaser shall notify Furman of the claimed defects via email (


If the defects are of such type and nature as to be covered by this warranty, Furman shall authorize purchaser to return the product to Furman headquarters. Warranty claims MUST be accompanied by a copy of the original purchase invoice or receiptshowing the purchase date. Shipping charges to Furman headquarters must be prepaid by the purchaser of the product. Furman shall, at its own expense, furnish a replacement product or, at Furman’s option, repair the defective product. Return shipping charges back to purchaser will be paid by Furman.


Furman’s Connected Equipment Warranty covers equipment that is damaged by transient voltage (an “Occurrence”) while properly connected through the Furman AC-210A E to a properly wired AC power line with a protective ground in an indoor location. Furman’s Connected Equipment Warranty is limited to the amount of the deductible on the Purchaser’s personal property insurance policy up to $500.00. In order to make a claim for this Connected Equipment Warranty, the Purchaser must forward a copy of his/her personal property insurance claim for the damaged equipment to Furman and complete the Furman Connected Equipment Warranty claim form (email Furman at

to obtain the form).

Furman reserves the right to review the damaged Furman product, the damaged connected equipment, and the site where the damage occurred. All cost of shipping damaged equipment to Furman for inspection shall be borne solely by the Purchaser. Damaged equipment must remain available for inspection until the claim is finalized. The Connected Equipment Warranty is also in effect for a period of three years unless the Purchaser does not complete the warranty registration within fifteen days from date of purchase, at which time, the Connected Equipment Warranty period is also reduced to one year from the date of purchase.

All warranties contained herein are null and void if: the Furman Surge Protector in use during the occurrence is not provided to Furman for inspection upon Furman’s request at the sole expense of the Purchaser, Furman determines that the Furman Surge Protector has been opened, improperly installed, altered in any way or tampered with, Furman determines that the damage did not result from the Occurrence or that no Occurrence in fact took place or Furman determines that the connected equipment was not used under normal operating conditions or in accordance with Manufacturer’s instructions for the connected equipment. All Furman Surge Protectors must be plugged directly into a properly wired AC power line with a protective ground and must not be “daisy-chained” together in serial fashion with other power strips, UPS’s, other surge protectors, three-to-two-prong adapters, or extension cords. Any such installation voids this warranty.

The Furman warranty only protects against damage to properly connected equipment where Furman has determined, at its sole discretion, that the damage resulted from an Occurrence and does not protect against acts of God (other than lightning) such as flood, earthquake, war, terrorism, vandalism, theft, normal-use wear and tear, erosion, depletion, obsolescence, abuse, damage due to low-voltage disturbances (i.e. brownouts or sags), non-authorized program, or system equipment modification or alteration. Do not use this product in anyway with a generator, heater, sump pump, water-related device, life support device, medical device, automobile, motorcycle, or golf-cart battery charger. To be used indoors only and in dry areas. All warranties contained herein are null and void if used in anyway with any of the aforementioned devices.



Furman does not warrant against damages or defects arising out of improper use or abnormal handling of the product, or against defects or damages arising from improper installation. This warranty shall be cancelable by Furman at its sole discretion if the product is modified in any way without written authorization from Furman or Nortek Security & Control LLC. This warranty also does not apply to products upon which repairs have been affected or attempted by persons other than pursuant to written authorization by Furman or Nortek Security & Control LLC. THIS WARRANTY IS EXCLUSIVE. The sole and exclusive obligation of Furman shall be to repair or replace the defective product in the manner and for the period provided above.

Furman shall not have any other obligation with respect to the products or any part thereof, whether based on contract, tort, strict liability or otherwise. Under no circumstances, whether based on this Limited Warranty or otherwise, shall Furman be liable for incidental, special, or consequential damages. This Limited Warranty states the entire obligation of Furman with respect to the product. If any part of this Limited Warranty is determined to be void or illegal, the remainder shall remain in full force and effect.


AC Current Capacity
Input: 10 Amp capacity required
Output: 10 Amp RMS (both outlets combined)
AC Noise Attenuation, Transverse (Differential) Mode
> 40dB @ 100kHz
> 50dB @ 500kHz
(linear attenuation curve from 0.05 to 100Ω line impedance)
Transient Voltage Surge Suppression
Series Multi-Stage Protection
Non-Sacrificial Protection with Zero Ground Contamination 376V peak clamping @ 6000V/3000A Input
Extreme Voltage Shutdown
275 VAC typically
Dimensions & Weight
1.75” (H) x 5” (W) x 8.5” (D), 3 lbs.
Safety Agency Listing


To attach or detach the AC power cord security clamp, simply assemble or disassemble as shown in the above illustration. Place clamp together as shown and secure screws in the provided holes to lock the power cord in place. Loosen screws and remove clamp from unit to detach.

Documents / Resources

FURMAN AC-210 A E Compact Power Conditioner [pdf] Owner's Manual
AC-210 A E, Compact Power Conditioner, AC-210 A E Compact Power Conditioner, Power Conditioner, Conditioner

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