Vintage HIWATT Custom 100 DR103 tube guitar amplifier head from the Biacrown era.

Based on the serial number, this unit is believed to have been manufactured around 1983–1984.

The amplifier was purchased by the current owner in May 2026 and was used approximately 2–3 times for operational and sound checks. During those checks, the amplifier operated normally and no particular problems were noticed with the controls, sound output, or vacuum tubes.

According to the previous owner, the amplifier had been regularly maintained. The controls were checked during use and appeared to function normally.

This is a vintage amplifier and shows cosmetic wear, scratches, and signs of age as visible in the photographs. Please review all photos carefully for the exact cosmetic condition.

The original HIWATT circuit concept and 100-watt EL34-based design are retained in this Biacrown-era Custom 100.

Included:

• HIWATT Custom 100 DR103 amplifier head
• Power cable

Condition: Used – Good

Because this is a vintage amplifier, it is being sold in its current condition. The main functions and sound output have been confirmed through actual use, but every possible function has not been measured with professional test equipment.

The amplifier will be carefully packed for international shipping.

Shipping:
The amplifier will be carefully and securely packed for international shipping. The item will normally be shipped within approximately one week after payment has been confirmed.

Import duties, customs duties, taxes, brokerage fees, and any other charges imposed by the destination country are not included in the item price or shipping charge. Any such additional charges are the buyer’s responsibility. Please check the import regulations and fees applicable in your country before purchasing.