NAD 2155 Stereo Power Amplifier 55 WPC, 125 Watts Bridged
$395.00
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Other power amps we have in stock now
3 in stock · $395.00–$645.00 · all ship
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Give your next receiver Bluetooth.
The RA-Twin II adds Bluetooth streaming to any vintage receiver or amp with a spare input. Phone to stereo in about a minute, and nothing on the receiver is modified.
RA-Twin II, $39.00 →NAD 2155 Stereo Power Amplifier 55 WPC – Tested, Working Perfectly
Experience high-current, dynamic amplification from the classic NAD 2155 power amplifier—fully tested and working flawlessly. This reliable amp is an excellent choice for upgrading from a low-powered receiver, pairing with a separate preamp, or adding serious muscle to any vintage or modern audio system.
The NAD 2155 delivers a conservatively rated 55 watts per channel (8 or 4 ohms, stereo), but thanks to NAD’s unique high-headroom design and powerful output stage, it effortlessly handles demanding speakers down to 2 ohms and produces bursts of dynamic power up to 110 watts/channel for musical peaks. For even greater output, the 2155 can be operated in bridged mono mode at 125 watts per channel continuous, or up to 250 watts for short-term peaks—perfect for driving larger speaker systems.
Classic NAD features include the Soft Clipping™ circuit for smoother sound at maximum levels, a heavy transformer and output stage capable of 40 amps peak current, and an impedance selector for optimal performance with different load types. The amplifier is praised for clean, full-bodied sound with precise control—musical, punchy, and refreshingly free from harshness.
Key Features:
55W x 2 stereo output (8/4 ohms), or 125W bridged mono
Dynamic power: up to 110W/ch (stereo), 250W bridged
Soft Clipping™ circuit minimizes distortion at high output
High-current output stage—handles speakers down to 2Ω
Impedance selector for optimal speaker matching
Inputs: Standard stereo RCA, switchable normal/bridged
Outputs: Dual A/B heavy-duty binding posts
Dimensions: 420 × 108 × 380 mm (16.5″ × 4.25″ × 15″)
Weight: 7.8 kg (17.2 lbs)
Year: 1985–1987
Musically accurate and robust, the NAD 2155 is a versatile building-block amplifier for audiophiles and serious listeners. It’s equally at home powering vintage British speakers or modern towers—and can be combined with a second 2155 for huge output via bridging.
Asking $395; buy with confidence and benefit from Radique’s “Bumper to Bumper” warranty and Perpetual trade back policy.
| Weight | 20 lbs |
|---|---|
| Dimensions | 19 × 20.5 × 8.25 in |
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Start with the number that is not on the front: 150 watts per channel into 8 ohms and 150 into 4. Most amplifiers quote a comfortable 8 ohm figure and hope you never connect anything harder; this one holds its full rating into half the impedance, from a high-current Holmgren toroidal feeding all-discrete circuitry with NAD's PowerDrive topology behind it. A BRIDGE MODE switch on the back turns it into a single mono channel of roughly 300 watts into 8 ohms, so the system can be rearranged later rather than replaced. Very Good condition.
