S-PRE - London Power Spectum Bass Preamp Kit

$115.00

Availability:
In Stock
Product Code:
S-PRE

Description

The S-PRE is based on the preamp sections of London Power's SPECTRUM bass amps. The front end is gain controlled and accommodates high-output active basses as well as low-output passives - and even piezo pickups. Clean sustain or overdriven sounds can be achieved, or just natural tube compression as the player desires.

The three-way EQ has a traditional and familiar feel. The second stage adds warmth and provides another means to achieve modern and traditional tonal textures. The output buffer assures that the tone generated will not be altered driving long cables.

Two 12A_7s (not included) can be used to provide an all-tube path. The front-end is optimized for 12AT7 but accepts any type. Local supply decoupling is included.

Controls:
• Gain
• High
• Mid
• Low
• Volume
• Output

Power requirements: 12V-300mA; 320V-4mA
Use PSU-PRE or similar to build a stand-alone bass preamp.

Combine with AMP-10, AMP-25 or AMP-50 to build an integrated bass amp.

This item includes PCB, tube sockets, resistors, and caps. Also includes installation instructions including schematic and layout diagrams of the kit.


For more info on London Power Preamp Kits, see our Selecting a Preamp Kit page.

Need a chassis for your preamp project? See our Rack-Mount Chassis page, or browse under Building Supplies.

 

PCB size: 5.9" x 1.5" (150mm x 38mm)

Photos (1)

About London Power

London Power was founded in 1990 by Kevin O'Connor, after two decades of research into innovative audio amplification techniques. Kevin is an audio designer, author and speaker, known for his proprietary methodology called Power Scaling, and for his eleven books on audio subjects. Whether you seek amps, kits or information, you'll find useful answers here on not just the "how" but the "why" of audio amplifier design. Please enjoy the information on this site, and don't hesitate to contact us with questions.

Contact Us

(807) 473-0952
11 am - 6 pm, M-F
amps@londonpower.com
PO Box 10012, Thunder Bay, ON P7B 6T6 CANADA