Rebuilt AO-28 Preamplifier
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Rebuilt AO-28 Preamplifier
$975.00
Sale price
$975.00
Regular price
Shipping calculated at checkout.
This Hammond AO-28 preamplifier has been completely restored using the Trek II CPR-28 Restoration System, with additional fuse protection for improved reliability. All tube shields and terminal covers are included.
The Trek II CPR-28 is a comprehensive restoration system designed to bring aging AO-28 preamplifiers back to like-new operating condition. Originally used in Hammond A-100, B-3, C-3, D-100, and RT-3 organs, these preamplifiers can benefit greatly from the replacement of aging electronic components.
The CPR-28 replaces all original resistors and fixed capacitors, including both multi-section can capacitors, with modern, high-quality components. This extensive restoration helps preserve the original tonal characteristics of the AO-28 while improving performance, reducing unwanted noise, and providing long-term reliability.
FEATURES:
- Premium-quality printed circuit board construction
- Ground plane shielding to minimize interference in sensitive circuit areas
- Long-life, high-temperature-rated electrolytic capacitors
- Heavy-duty standoff mounting for wirewound resistors
- New tone and percussion cutoff controls
- Restored tonal clarity and overall performance
- Exceptionally low background noise
- Additional fuse protection
Tonewheel General recommends installing a new set of high-quality vacuum tubes for optimal performance.
Important Notice:
- Technical support is limited to the information provided in this listing. No additional installation instructions or support are included.
- Any improper installation, modification, or misuse of this product will void all warranties.
- Installation and use of this product are performed entirely at the user’s own risk. Servicing or modifying electronic equipment involves inherent risks of injury, damage to equipment, and damage to personal property.
- Tonewheel General assumes no responsibility or liability for any damage, loss, injury, or other consequences resulting from the installation or attempted installation of this product.
- If you are not fully confident in your ability to perform this installation safely and correctly, we recommend sending the unit to us for professional service.