Fischer Amps FA 666 XB Custom Ambient

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Fischer Amps FA 666 XB Custom Ambient

Fischer Amps

FA 666 XB Custom Ambient

4.9 Expert Rating

Product Info

Article Number: 598765
Model: FA 666 XB Custom Ambient
Price: $1,241.90

* Prices may vary. Check retailer for current pricing and availability.

These Fischer Amps are seriously impressive custom IEMs, built to handle the demands of professional stage and studio work. The 3-way driver setup delivers a punchy, defined sound with surprising ambient awareness—perfect for drummers, keyboardists, or anyone needing clarity and control on a loud stage. They're a premium investment, but the sound quality and build are top-notch.

Product Description

  • Fischer Amps FA 666 XB Custom Ambient
  • In-Ear Earphones
  • Customised dynamic 3-way in-ear receiver
  • Suitable as professional in-ear headphones for stage and studio in the pro audio sector
  • 6 BA balanced armature drivers (2 x bass
  • 2 x mid
  • 2 x high) with boost in the bass range
  • Defined spatial sound signature
  • Defined
  • increased low end
  • Universal fit and ergonomic housing shape
  • Impedance @ 100 Hz: 14 Ohm
  • 000 Hz: 16 Ohm
  • @ 10
  • 000 Hz: 21 Ohm
  • Sensitivity @ 0.1 V: at 100 Hz 121 dB
  • at 1
  • 000 Hz 116 dB
  • at 10
  • 000 Hz 116 dB
  • Kink-resistant connection cable with 800 N tensile load
  • Detachable 140 cm cable with angled gold mini jack plug
  • Housing colour: Transparent with selectable faceplate
  • Includes transport bag with zip and incl. cleaning tool
  • Made in Germany

<font color="red">*Attention custom-made product!* An impression (earmould) from a hearing aid acoustician is required for the production of this in-ear receiver, which will incur additional costs. After receipt of your order, you will receive an e-mail from our specialists with all the necessary information for further processing. Please note that no money-back guarantee can be granted for custom-made products in accordance with our General Terms and Conditions §4 para. 5.</font>.

PROS
  • • Exceptional clarity across the frequency spectrum, thanks to the 6-driver design.
  • • German engineering ensures robust build quality and kink-resistant cable.
  • • Customizable faceplates allow for personalized aesthetics and stage presence.
  • • Excellent sound isolation combined with ambient awareness provides stage monitoring flexibility.
CONS
  • • The high price point puts these out of reach for many musicians.
  • • Custom IEMs require a professional ear impression for optimal fit and comfort.
  • • The boosted bass, while impactful, might be overwhelming for some genres.

Product Video

Key Features

Drivers 6 Balanced Armature Drivers (2 x Bass, 2 x Mid, 2 x High)
Driver Type Dynamic 3-Way Balanced Armature
Frequency Range 20 Hz – 20 kHz (estimated, typical for BA IEMs)
Impedance 14 – 21 Ohm (frequency dependent)
Cable Detachable 140 cm cable with angled gold mini jack plug, 800 N tensile load
Weight Approximately 8-10 grams (estimated, typical for custom IEMs)

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Frequently Asked Questions

The ambient feature allows external sound to bleed through, providing awareness of stage volume without removing the IEMs. The level of bleed-through is influenced by the fit and seal, not a user-adjustable setting.
You'll need to visit an audiologist or hearing specialist who can take a professional ear impression. Fischer Amps then uses this impression to create the custom-fit housing.
Fischer Amps focuses on a more defined, impactful low-end response, whereas competitors often prioritize a flatter, more neutral sound signature; it's a matter of personal preference and musical style.

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