• Account
  • View Shopping Cart

Menu Search View Shopping Cart Call Us

Spectra 1964 - STX 100 Mk2 500 Series Microphone Preamp  From Spectra

Legendary sound comes back around

Spectra 1964


Retail:  $1,135.00

"Experience the Difference"

Sound Pure's 3-Year Warranty

Our Free 3-Year Warranty!
In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free, Sound Pure 3-Year Warranty, which includes PARTS & LABOR. This high-value perk is our way of providing the ultimate in added value to enhance the unique personal touch our small, dedicated team contributes to each purchase.
Learn more »

Lifetime Support

Free Lifetime Technical Support!
Our small team of dedicated experts is here to help the original purchaser for the lifetime of the product. Why? Because we care about building real relationships with our customers for life and stand behind every product we sell.
Contact us for up-to-date delivery estimate.
Payments as low as $21/mo.

Manufacturer's Description from Spectra

You've Heard it before. Spectra preamplifier modules have been used to record countless hit records across the decades, and helped to define the sound of American music from Memphis Soul, to Rock and Roll. Un-changed, and still un-matched, the Spectra sound is now available in a no compromise 500 series format. 


The STX 100 represents an affordable alternative for employing the same Spectra Sonics technology of our famous recoring desks made over 40 years ago. The unique circuit topology of the STX 100 utilizes a 100 series discrete preamplifier design that was at the heart of every console built by the company. The result is unequaled performance in terms of expanded dynamic range (headroom), low noise and distortion, as well as extended harmonic content of the amplified signal. The STX 100 is a high-quality product manufactured in the US by Spectra 1964 at our Ogden facility. (Over 95% of the sourced components within all Spectra1964 originate from the US or European suppliers.)

Spectra 1964

About Manufacturer

Spectra Sonics was founded by William G. Dilley, and was originally located in Ogden UT. The Spectra Sonics Legacy was aquired by a partnership of two former employees in 2007. The company was relocated from Ogden to Layton, UT. The same manufacturing techniques which were implimented by Spectra Sonics under its original ownership are still used today. All Spectra Sonics equipment is hand-tested and hand-soldered by a small team of specialists. All Spectra Sonics equipment undergoes rigorous hands on testing before leaving the factory. Much of the test equipment used was hand built in the original factory over 40 years ago.


Gain: 64dB
THD: Less than .01% @20Hz-20kHz
Signal/Noise: Better than 120dB (unweighted)
Maximum Output: +18dBm, 20Hz-20kHz
Power Requirement: Less than 50mA, +18dBm
Input/Output Control: Continuously Variable/10dB Pad
Output Impedance: Less than 50 Ohms
Frequency Response: 10Hz-50kHz
Phantom: 49 Volts
Polarity: 180 Degrees/Reverse/Mic or Line Input