[Middy]

Oppo is using a 6-section sealed pot. No way to use a cleaner and improper to clean it. See this link for an example: http://www.ebay.com/itm/ALPS-6-gang-motorized-Potentiometer-RK16816MG-10K-Pot-Volume-Audio-rotary-Japan-/261901754380

Thanks for the tip. Didn't realise it's such a fancy pot. I don't want anyone to damage anything. I'll stick to twisting my knob 20 times..

 

[mithrandir38]

anyone know what the HA-1's output power is into 100 and 200 ohms?

Single ended or balanced? You should be able to find the specs online with a search or two. It can run pretty much any can with authority

 

[mithrandir38]

Headphone Amplifier Performance Specifications

Specification Condition XLR Input - Balanced Output RCA Input - 6.35 mm Output
Maximum Output Power (Per Channel) Into 600 Ohm 2400 mW 600 mW
Into 32 Ohm 3000 mW 3500 mW
Rated Output Power
(Per Channel) Into 600 Ohm 800 mW 200 mW
Into 32 Ohm 2000 mW 500 mW
Frequency Response 10 Hz – 200 kHz (+0/-1 dB)
20 Hz – 20 kHz (+0/-0.04 dB) 10 Hz – 200 kHz (+0/-1 dB)
20 Hz – 20 kHz (+0/-0.04 dB)
THD+N at 1k Hz
(A Weight, 20 Hz – 20 kHz) Rated Power < 0.0018% (< -95 dB) < 0.0056% (< -85 dB)
50 mW < 0.001% (< -100 dB) < 0.0022% (< -93dB)
Channel Separation > 120 dB > 90 dB
Signal-to-Noise Ratio
(A Weight, 20 Hz – 20 kHz) > 111 dB > 111 dB
Dynamic Range
(1 kHz -60 dB, A Weight, 20 Hz – 20 kHz) > 120 dB > 115 dB
Output Impedance 0.5 Ohm 0.7 Ohm
(Test condition: Volume knob at Max position and an input signal to drive the output with 600 Ohm loads to the rated output power, unless otherwise noted.)

"Made for iPod", "Made for iPhone", and "Made for iPad" mean that an electronic accessory has been designed to connect specifically to iPod® , iPhone®, or iPad®, respectively, and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation of this device or its compliance with safety and regulatory standards. Please note that the use of this accessory with iPod, iPhone, or iPad may affect wireless performance.

iPad, iPhone, iPod and iPod touch® are trademarks of Apple Inc., registered in the U.S. and other countries.

Compatible iPod/iPhone/iPad Models
- USB works with iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini, iPod touch (5th generation).
- Bluetooth technology works with iPhone 5S, iPhone 5C, iPhone 5, iPhone 4S, iPad (4th generation), iPad mini, and iPod touch (5th generation).

All trademarks are the property of their respective owners.

 

[swjones3]

i was looking for balanced, i saw those specs but i don't know how to do the calculations for specific ohms

 

[mithrandir38]

i was looking for balanced, i saw those specs but i don't know how to do the calculations for specific ohms

Trust me. There is more than enough output for any 100 to 200 ohm phones. It's a high output clean beast

 

[Middy]

Hi thread,any one know the internal fuse type and rating?
For future emergencies...Always good to know...

 

[craftyhack]

Hi thread,any one know the internal fuse type and rating?
For future emergencies...Always good to know...

Tin foil usually works, or a piece of wire if you are feeling fancy.

 

[Aaaaa]

Has anyone tried the new Sennheiser HD 800 S with the HA-1 yet? Is it any better than HD800 with?

 

[Middy]

There is a new mod for the HD800 to bring it close to the S.
Have a look at Innerfidelity latest post. Sorry I can't comment on sound..

Less than half price for second hand HD800.Simple Mod.. More money for Amps Daps ....

Do love my OPPO sounds great with my ETHER. I love the micro details.

Good luck friend
Dave

 

[zilch0md]

There is a new mod for the HD800 to bring it close to the S.
Have a look at Innerfidelity latest post. Sorry I can't comment on sound..

Less than half price for second hand HD800.Simple Mod.. More money for Amps Daps ....

Do love my OPPO sounds great with my ETHER. I love the micro details.

Good luck friend
Dave

 
http://www.innerfidelity.com/content/sennheiser-hd-800-s-tweaked-and-delightfuland-french-diy-response

 

[Aaaaa]

Careful, the Oppo doesn't have a pre-phono stage so you will have to connect the turntable to the pre-phono and the pre-phono to the Oppo. Turntables put out a much smaller output than CD players and other digital sources. Just check the manual for your turntable or search on google and you will find out why you need the intermediary component.

 

[WayTooCrazy]

Is the chassis of the HA-1 aluminum or steel? If steel, http://www.demcifilter.com/ might have, or be able to make a dust filter for the top of the unit.

 

[Middy]

Aluminium

 

[Allanmarcus]

Update:
 
Oppo repaired my HA-1. They replaced the volume pot and all the weird issues seems to have been resolved. I'm thrilled its fixed and the Oppo repaired the unit, but I have to wonder at the wisdom of the integrated electronics tied to the pot.

 

[Middy]

Update:

Oppo repaired my HA-1. They replaced the volume pot and all the weird issues seems to have been resolved. I'm thrilled its fixed and the Oppo repaired the unit, but I have to wonder at the wisdom of the integrated electronics tied to the pot.

Hi Allan was your OPPO in warranty?
Mine is second hand so I am worried about a failure..