For sale is one of the finest examples of a McIntosh MA230 tube integrated amp available on the market today with original McIntosh tubes. The front faceplate was replaced by an authorized McIntosh service center about 4 years ago and it is still nearly flawless. I recently had it "tuned up" to ensure this beauty functions and looks like a 55 year old gem should. Conservatively rated an 8/10 because of a few tiny nicks here and there (not on the faceplate). For it's age, it is truly incredible. I have the original manual and sales brochure which are also in incredible condition including the schematic. Aside from a small smudge on the front cover, this paperwork looks like it was just opened for the first time. The paperwork alone would fetch $300-500.
I would very much prefer local pickup in the Northern New Jersey area. I am happy to demo it at my house, or perhaps bring it to you for a demo within a reasonable distance from 07003.
If you absolutely insist that I ship it to you, I will require you to pay an additional $450 for a proper original L-12 walnut case and brackets to be purchased from a former long-time McIntosh employee who still has these in his own inventory. This will also delay shipping by a week or so. I will absolutely not ship without the walnut case. Cost of shipping will vary but will cost at least $100 due to insurance and bulletproof packing materials.
Cash only for local pickup. Paypal adds 3.2% if I have to ship it.
MA 230 Preamp-Amplifier
ELECTRICAL: Stereo. Hybrid (solid state preamp and tube power amplifier). 30w/ch stereo, 60w mono. Response 20-20kHz (+0 -0.5dB). Distortion 0.5%. Noise and hum -75dB high level, -60dB low level . Output impedance 4, 8 and 16 ohms. Damping factor 10. Input sensitivity and impedance: high level 0.25V at 250k, phono 1.5mV at 47k, tape head 1.5mV at 1 meg. Tape output 0.25V into 25k. L+R output 10V into 5k. Dual concentric tone controls +18dB to -18dB. LF filter 50Hz at 12dB/oct. HF filter 5k at 12dB/oct.
FRONT PANEL: Glass panel at top. Anodized gold at bottom. Input selector: aux, tape, tuner, phono 1, phono 2 and tape hd. Bass and treble each dual concentric. Volume. Mode selector: L to L+R, R to L+R, stereo rev, stereo, mono (L+R), L+R to L and L+R to R. Balance. Rocker switches: comp: RIAA or LP, tape monitor, phase: 0 or 180, speaker: on or off, power: on or off, LF: flat or filter, HF: flat or filter, loudness: flat or compensate. Headphone jacks. Red power indicator.
BACK PANEL: Barrier strips for 4, 8, and 16 ohms, Outputs: Tape and L+R. High level inputs: tape mon, aux, tape and tuner. Low level inputs: ph 1, ph 2 and tape hd. Ground binding post. AC outlets: 2 switched, 1 unswitched. Fuse.
TUBES: 4-7591, 2-12AU7, 12AX7.
Size 5-7/16"H, 16"W and 14-1/2"D. Weight 43 lbs. Sold from 1963-1966.