Steve Herschbach
Hero Member
Hi,
The Goldmaster II was the first of the new "black box" 50 kHz Goldmaster series. There was an old Goldmaster series in blue boxes that used old TR technology and which should not be confused with the newer ground balancing units. List price new for the GMII was $499.95
The Goldmaster V/SAT added the "Variable Self Adjusting Threshold" control that gave the model it's name. If I recall correctly the V/SAT also introduced the DD coil still used on the Goldmasters to this day. The Goldmaster II had a concentric coil. The V/SAT also had a list price of $499.95
The Goldmaster 3 added an audio boost feature and was the last model that was convertible to chest or hip mount. List price was $599.95. The Goldmaster 4/B introduced the new coin detector style box. List price was bumped to $699.95. The price increase and new box design were not well received, and the 4/B was not very popular and so is rarer than the other models. It was also available in a rather clunky chest mount only version.
All these models offered essentially the same 50 kHz performance. The new Goldmaster GMT is a total redesign with digital processing, a refined iron id system, and most importantly, the option to either manually ground balance or auto ground balance. The operating frequency was shifted slightly to 48 kHz so as to not interfere with previous Goldmasters in the field. The ability to auto ground balance is a real boon to new users, while the ability to manually tune is a plus for the professional. Most other units on the market let you do one or the other, but not both. The GMT has been a very popular unit. List price is $799.95
Steve Herschbach
Alaska Gold Forum
The Goldmaster II was the first of the new "black box" 50 kHz Goldmaster series. There was an old Goldmaster series in blue boxes that used old TR technology and which should not be confused with the newer ground balancing units. List price new for the GMII was $499.95
The Goldmaster V/SAT added the "Variable Self Adjusting Threshold" control that gave the model it's name. If I recall correctly the V/SAT also introduced the DD coil still used on the Goldmasters to this day. The Goldmaster II had a concentric coil. The V/SAT also had a list price of $499.95
The Goldmaster 3 added an audio boost feature and was the last model that was convertible to chest or hip mount. List price was $599.95. The Goldmaster 4/B introduced the new coin detector style box. List price was bumped to $699.95. The price increase and new box design were not well received, and the 4/B was not very popular and so is rarer than the other models. It was also available in a rather clunky chest mount only version.
All these models offered essentially the same 50 kHz performance. The new Goldmaster GMT is a total redesign with digital processing, a refined iron id system, and most importantly, the option to either manually ground balance or auto ground balance. The operating frequency was shifted slightly to 48 kHz so as to not interfere with previous Goldmasters in the field. The ability to auto ground balance is a real boon to new users, while the ability to manually tune is a plus for the professional. Most other units on the market let you do one or the other, but not both. The GMT has been a very popular unit. List price is $799.95
Steve Herschbach
Alaska Gold Forum
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