 Technical Highlights
Design Aspect/Features
• Hammond 145580X series Compact
Aluminum enclosure
• Custom CNC milled front plates
• 2 stage opamp design
• Opamps in a Gold-Plated DIP Socket
• Custom printed Madcap Audio PCB
• Alps RK097 Volume Control with
built in ON/OFF switch
• DC Power/Charging Jack
• Dimension: aprox size with
knob:(5.4 x 9.5 x 2.3 cm)
Improved Aspect/Feature
Improved ruggedness with the new
faceplate design
Hammond 1455C80x case
The premium edition’s surface area is almost the same size as
a credit card, and
has a thickness of about 23mm. The small dimension makes the
amplifier very pocket-friendly.
The extruded aluminum Hammond 1455C80x case, available in cool
black or brushed silver with anodized finishes. It is very attractive
and sturdy.
Power Source
Unit comes with rechargeable high dense 400mAh PP3 NiMH 9V
battery.
2 Stage Opamp Design
The Madcap portable amplifier features two stage opamp
approach that improves Current handling. There are four opamps all
together: two for the left ear and two for the right.
So what do all these means to you?
With improved Current handling, it can drive headphones and
IEMs that have relatively low impedance properly. This improves the
sound quality rather than the volume, as low impedance
headphones/earphones requires more Current to drive them properly.
Amplifier Chip
The Premium edition comes with a default pair of OPA2227 Dual
channel amplifier chip as the gain stage amp.
The opamp is mounted in a gold-plated 8-pin DIP socket,
allowing you to purchase other chips to alter the amp's
"signature." With the new design, It allows user to use a
wide varieties of Opamps available in the market.(AD8397 , AD797 or
,OPA627au etc..)
Amplifier stability is an important concern when trying
alternative Opamps. A DIP socket gives you the option to try different
Opamps aka (Opamp rolling)
| 
