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■ Manufacturer / model numberMcintosh C28■ AccessoriesInput short pin X 2, Owner's Manual/Service Manual (Copy)■ Condition/maintenance content・ Maintenance / operation confirmed

・ Input characteristics/distortion rate measurement confirmation data attached

・ Each SWVR contact cleaning (E cleaner)

・ Front panel lighting LED (bulb type LED ball X12, selector 3㎜X2)

・ Cleaning / output plug etc. internal exterior panel knob

* The top panel guide plate has a little abrasion,

The front panel bubbles are small and small and there are no noticeable things. In particular, the inside has a beautiful state.. We are maintaining maintenance at our shop. Each part works normally.■ Operation warranty period: 6 months(Valid from the date of arrival)

* For details, please see "Guarantee" at the bottom of the page● About the amount (total amount) to be paidIt will be a successful bid amount + consumption tax + shipping fee. (Please see the amount listed for the shipping fee. If the shipping fee is displayed as 0 yen, the shipping fee will be charged after a successful bid)■ About productsMacintosh C28 preamplifier. It is a model released around 1970 and is a high -end model of C26.. It can be said that it is one of the most attractive products among Macchimpuri, where you can enjoy thick and dark sound like a vacuum tube preamp.. The macintosh filter sound unique to this era is

It gives the source a unique character that cannot be reproduced with a general amplifier. It is said that the price is soaring in the home country and the United States.

This unit is conducting restraint maintenance at our shop. In addition, excess fever (power consumption) has been reduced by changing from genuine bulb to LED.

Summer is cool and economical. In the case of a normal light bulb, regular bulb replacement is required,

The LED is very small that runs out, and it has a maintenance -free specification. Model: Stereo preamplifier

Frequency characteristics: 20Hz to 20kHz +0 -5db

Distortion rate: 0.1 % or less (20Hz to 20kHz, when rated output)

Input sensitivity/impedance: phono1,2 = 2MV (1kHz)/47kΩ (65PF), aux, tuner, tape 1, 0.25V/250kΩ, mic = 2.5mv/500kΩ

Ham and noise: aux, tuner, tape1, 2 = 90db (no hearing correction), phono1, 2 = 78db (when input 10 mV)

Output level/impedance: Main output = 2.5V/47kΩ (when rated entry), TAPE output = 0.25V/47kΩ (when rated)

Headphone, LINE output = 0.75V (8Ω), 2.5V/600Ω, centerChannel = 1.25V/47kΩ (when rated)

Low Filter (Rumble Filter): 50Hz (12dB/OCT), 20Hz (18db/Oct)

High Filter (Scratch Filter): 7000Hz (12db/Oct), 20kHz (18db/Oct)

Used semiconductor: 26 transistors, 4 silicon diodes, 2 diode bridges

Bass control:+20db ~ -20db (20Hz) 11-step switching

Treble Control:+18db ~ -18db (20kHz), 11-step switching

VOLUME Control: 0db ~ -65db, continuous variable

Input Selector: AUX, TUNER, Phone1, Phone2, MIC, Tapehead 6 positions

Mode Selector: Leftonly, Rightonly, STEREO, STEREOREVERSE, Monol+R, Monol-R 7 positions

Power: AC120V, 50/60Hz

Power consumption: 45W

External dimensions: Width 381 x height 127 x depth 330 mm

Weight: 11.34kg

▼▼ For those who are considering purchasing * Please read before order/bidding■ Warranty * Warranty from the arrival date.(1) Initial failure (including problem) warranty period: Contact within 3 days, return within one week
(2) Operation warranty period: Page description period (3 to 6 months)
We have confirmed the reproduction operation before shipping, but there may be problems after arrival due to shaking during transportation. If you check the operation within 3 days after arrival, and contact us, the shipping fee (round trip) when returning is also available.
It will be free, so please check the operation as soon as you arrive.. The procedure for applying for repair"Repair/Maintenance" pagePlease check more. ※※Notes※※
If repaired outside of our shop during the warranty period, the warranty will be invalidated. In addition, please note that we cannot pay the repair costs, etc. It is not a problem that requires repair, but forgetting to remove transport locks, operating mistakes, installation environment (temperature difference, humidity, etc.)
, In the case of compatibility with other devices. There are products from the era when there were no current radio environments and LEDs, so if it is not such a [problem that requires repair].
Shipping fee for arrival / return+repair estimate fee (2,500 yen excluding tax)
We may bear the burden to our customers.. Questions to manufacturer support before applying for repair, especially for tuner devices, use the radio wave status of the usage environment.
Please apply after investigating.■ Returns / refundsIf repair is not possible in the above warranty (initial failure), we will accept returns and exchanges. * If repair is not possible other than the initial failure, we will purchase and pay the assessed amount. Since the assessed amount is cheaper than the purchase price, please check the operation within 3 days of arrival.■ About product descriptionThe details are described as much as possible.
Due to the nature of the product, all status notation may be difficult.. If you want to know more conditions
Please be sure to contact us in advance before purchasing.■ About shipping (will be shipped from Hokkaido)We handle used goods, so we check the operation before shipping and then pack it. Unlike the new product, it is not shipped in the packaged state, so it may take time. Usually, it will be shipped 3 days to 1 week after payment confirmation, so if you are in a hurry, you will be in a hurry before ordering/bidding.
Please contact me.■ Please note that the following cases may be canceled・ When a problem that is not in the explanation or a missing accessories is discovered (cancellation for seller)
・ If you order before changing inventory due to sold out at the store (cancellation for sellers)
・ If there is no payment within one week after ordering (successful bid)■ Regarding cash on delivery of new or negative customersWe refuse payment by cash on delivery to prevent trouble. Payment should be made by simple payment or bank transfer.

■ Yahoo shopping, Yahoo auction! Is exhibited in. The types of payment methods are different. There are events such as points up each
Please order at a convenient store for our customers.● Yahoo shopping shop ● Yahoo auction! Store store---------------------------------------------
Audio Purchase Center
/BLUES AUDIO JAPAN
061-2283
1-54 Fujino, Minami-ku, Sapporo, Hokkaido
Daiichi Ease Building 1F
Business hours: 11-19:00 Regular holidays: Thursday / Sunday
TEL: 011-211-0006 (accepted only during the above business hours)
Email: satei@kaitori.audio
Web:https://www.kaitori.audio---------------------------------------------------------------

No questions.