Reverb Pioneer Preamplifier Pioneer SPEC-4 150-Watt Stereo Solid-State Power Amplifier 1977 - 1980 - Silver USD$2,200 US 3h ago Sign in to Research →
eBay US Pioneer Preamplifier Pioneer Spec-4 2-Ch Stereo Power Amplifier Class AB 330W RCA Input Silver USD$2,250 US 25 Aug 2026 Sign in to Research →
audio-markt.de Good Pioneer Preamplifier Pioneer Pioneer M-75 (SPEC 4) USD$1,615 ≈ EUR$1,400 DE 12 Aug 2026 Sign in to Research →
Reverb Pioneer Preamplifier Pioneer Spec-4 Stereo Power Amplifier w/ Extra Faceplate USD$1,700 US 5 Aug 2026 Sign in to Research →
eBay US Pioneer Preamplifier Pioneer Spec-4 Stereo Power Amplifier 2-Channel RCA 150W 2 In/2 Out Silver USD$1,800 US 28 Jul 2026 Sign in to Research →
Reverb Pioneer Preamplifier Pioneer Spec-4 stereo power amplifier 1970’s USD$1,695 US 18 Jul 2026 Sign in to Research →
Reverb
